Comparable to earlier studies [6, 7], we could confirm an effective spread of 12 in (ca. 30 cm) or greater. The study at hand did not evaluate the dart-to-dart distances, but the target area. However, our results show that larger probe spread, together with more than one extremity caused sufficient incapacitation.

Draft One is available today in the U.S. as part of the Axon ecosystem and works for Axon body-worn camera and Axon Evidence customers, with even easier and more seamless insertion into Axon Records incident reports. For agencies not yet using Axon Records, the generated reports can be easily inserted into their current RMS. Draft One was built on top of Microsoft’s Azure OpenAI Service platform. Data is always secured within the Axon network, where transcripts and reports maintain agency security controls. Axon unveiled this latest technology innovation at its leading public safety technology and training conference, Axon Week. To learn more about the news announced at Axon Week, see Axon's blog.

As an interface between physical force tactics and lethal weapons, conducted electrical weapons (CEWs) are currently an effective application option for law enforcement agencies [1]. Due to the unique way in which CEWs physically incapacitate violent subjects, who pose an immediate threat, CEWs are widely used by law enforcement officers in the USA, Canada, the UK, Europe, and Australia.

Report narratives are written following calls for service and incidents in the community and are used to summarize these incidents within the overall police report. Draft One accelerates the tedious task of reporting like no other solution before, leveraging AI to create a draft narrative quickly. Audio from Axon Body 3 and 4 (BWC) camera footage is uploaded over LTE and transcribed automatically, so report drafts are available within five minutes of an incident ending.

The TASER 10 in group 8 also had a large distance between the probes targeting the right upper arm and right thigh showed good results in incapacitation.

Kunz, S.N., Ho, J.D., Dawes, D.M. et al. Effectiveness of a New-Generation CEW in Human Subjects with a Goal-Directed Task. Hum Factors Mech Eng Def Saf 8, 1 (2024). https://doi.org/10.1007/s41314-024-00066-x

TASER7 Manual

Axon's product development is driven by responsible innovation, grounded in a set of guiding principles in key areas to ensure that everything we do serves as a force for good. Axon recognizes the immense promise of ethical AI innovation and aims to harness cutting-edge AI technology to revolutionize public safety, all the while prioritizing the rigorous mitigation of biases and other potential risks. This includes building tools that preserve the crucial role of human decision-making with specific controls that keep officers in-the-loop, while significantly improving efficiency and efficacy.

Thirty-four subjects (four female and 30 male) were assigned to eight study groups (Fig. 1). Twenty subjects in five groups received one exposure from a TASER 10. Five subjects in group 4 received two exposures, one from a TASER 10 and a TASER 7. Nine subjects in each of two groups (groups 6 and 7) received two exposures from a TASER 10, with an additional dart added for the second exposure. A total of 48 exposures were recorded, 43 from a TASER 10 and five from a TASER 7.

Agency trials have resulted in roughly one hour of time saved per day on paperwork. For every eight officers who use Draft One during their day, that translates to an extra eight-hour shift or more. When officers can spend more time connecting with the community and taking care of themselves both physically and mentally, they can make better decisions that lead to more successful de-escalated outcomes. Draft One also increases job satisfaction by helping police officers get a quality head-start on a high-volume, time-consuming task.

In group 7, a first exposure tested several darts in a rather small area and a second exposure enlarged the probe spread. The results support the manufacturer´s recommendation that greater probe spread increases incapacitation effectiveness.

The starting position of each participant was a balanced and stable “fighting stance” with one foot slightly forward and weight balanced on a padded training mat. For security reasons, spotters were standing on each side and behind the volunteers (Fig. 2). The task at hand was to reach and touch a suspended martial arts dummy 12 ft (3.65 m) from the starting position. The 12-ft distance was established to prevent a simple fall forward from allowing the subject to reach the target and to prevent leaping. For motivational purposes, the subjects were told that the CEW would discharge until contact was made with any part of the dummy or until 20 s of exposure had elapsed. The actual maximum possible exposure duration was one standard cycle of 5 s, which was never reached. The test was stopped as soon as the study investigator with policing experience decided that the subject was incapable of progressing. Subjects were verbally encouraged to reach the dummy during the exposures to avoid subjects just giving up. All subject exposures and their attempts to disable the dummy were video recorded using two high-speed cameras (Sony FDR-AX700 4K, 1080p HD at 50 frames per second) for follow-up analysis.

In group 2, the darts were placed in the lower abdominal region and on one thigh, which caused incapacitation of both legs in all volunteers.

A commercial body composition monitor and scale (Omron Full Body Sensor, Model HBF-516B, Omron Healthcare, Inc., Hoffman Estates, Illinois) was used to determine participant weight that was combined with stated height to determine body mass index (BMI).

Median and interquartile range values were calculated for the incapacitation scores for each limb individually, and the total score was calculated from the pooled data. Paired analysis with Wilcoxon signed rank test was used for the TASER 10 to TASER 7 shot comparison and second shot with additional dart comparison given non-normally distributed data.

Axon Enterprise, Inc (Axon®), formerly TASER International (TASER®), Inc., Scottsdale, AZ, is recognized as the major manufacturer of CEWs. While the first CEWs, the Tasertron TF 76, the AIR TASER 3400, the TASER M26, and the TASER X26 had an output waveform that was the same irrespective of the load resistance, the new so-called SMART CEWs, the TASER X26P, TASER X2, and TASER 7, use feedback control to adapt the pulse charge to the load, targeting a mean pulse charge of about 65 microcoulombs. With these devices, a consistent pulse charge independent of resistance is generated by various feedback mechanisms [2].

A dart placement on each lower thigh (group 1) caused a complete lock of the lower extremities with a remaining ability to fully use both arms.

If the electrodes are placed on one side (left or right) of the frontal body, the probability of a complete contraction of all muscles is unlikely. All subjects of group 2 went to the ground, but still had remaining control over parts of at least their left arm and leg. The level in incapacitation was comparable to group 1. The results of group 5 were stronger towards incapacitation, which could indicate a stronger muscular contraction, when targeting the back vs. the front. This phenomenon was also noted in our earlier studies and could be explained by larger muscle groups on the back than on the front of a body. However, due to a rather low number of cases, this assumption needs to be analyzed further.

There was no significant difference in total incapacity scores in the subjects receiving an exposure from TASER 10 with median score 6 (95% CI 3–12) and TASER 7 median score 5 (95% CI 3–12). No significant difference on Wilcoxon rank sum testing (p = 0.56). Goal achievement was similar between the two groups (Table 5).

The best results in incapacitation were achieved with dart placement on the upper and lower extremities (group 8) and on the upper left back and frontal right thigh (group 3). Here, a large dart spread was created with a complete incapacitation of the subjects.

During our tests, no physical abnormalities occurred and no irregularities were noted with post-exposure physical examinations.

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

TASER7 parts diagram

Axon conducted a double-blind study to compare the quality between report narratives written with Draft One and those without. Results showed that Draft One performed equal to or better than officer-only report narratives across five dimensions, including completeness, neutrality, objectivity, terminology and coherence. With higher quality and more consistent reports, the judicial system will have more clear, factual information to use to help accelerate justice when called for. Learn more about the study, which was conducted with 24 independent experts, including district attorneys, field operations command staff and inclusion scholars.

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Ho J, Dawes DM, Kunz SN, Satpathy R, Klein L, Driver B, Stang JL (2020) A comparative study of conducted electrical weapon incapacitation during a goal directed task. Forensic Sci Med Pathol 16:613–621

SCOTTSDALE, Ariz., April 23, 2024 /PRNewswire/ -- Axon (Nasdaq: AXON), the global public safety technology leader, today introduced Draft One, a revolutionary new software product that drafts high-quality police report narratives in seconds based on auto-transcribed body-worn camera audio. Draft One leverages Generative Artificial Intelligence (AI) and includes a range of critical safeguards, requiring every report to be reviewed and approved by a human officer, ensuring accuracy and accountability of the information before reports are submitted.

The study was performed in accordance with the ethical standards as laid down in the 1964 Helsinki declaration and its later amendments or comparable ethical standards. No animals were harmed during the study.

"Every single officer in the U.S. writes police reports, often every day and normally multiple times a day," said Axon CEO and Founder Rick Smith. "As we've done with Draft One, harnessing the power of AI will prove to be one of the most impactful technological advancements of our time to help scale police work and revolutionize the way public safety operates."

CEW TASERmeaning

Due to individual differences such as tissue densities, body physique, pain tolerance, the anatomical target area, and the electrical probe distance, it is essential to analyze various probe placements and their effect on human volunteers when determining weapon effectiveness and thus the level of incapacitation. With a different targeting possibility than earlier weapons, the TASER 10 offers ways of strategic targeting with the goal to control the body area and extent of incapacitation.

Incapacitation and goal achievement scores in composite and by group are presented in Table 2–5. Kruskal–Wallis analysis on total incapacitation scores (Table 3) suggests heterogeneity between the groups (p = 0.0003). However, the sample sizes are too small within groups for post hoc analysis to assess further differences.

Police departments across the U.S. are understaffed. While agencies are emphasizing hiring and retention, demand to fill open roles is low. The shortage results in longer response times to calls for service and officers working overtime, which can lead to burnout and be costly for taxpayers. Ultimately, Draft One has the potential to augment and amplify officers, giving them back time to better serve their communities.

Non-Axon trademarks are property of their respective owners. Axon, Axon Body, Axon Ecosystem, Axon Evidence, Axon Records, Draft One, TASER and Protect Life are trademarks of Axon Enterprise, Inc., some of which are registered in the US and other countries. For more information, visit www.axon.com/legal. All rights reserved.

For all law enforcement agencies, Draft One is a valuable tool that will be an immediate force multiplier for their workforce. Reporting is a critical component of good police work; however, it has become a significant part of the job that officers commonly refer to as "burdensome." Axon found that every week officers in the U.S. can spend up to 40% of their time — or 15 hours per week — on what is essentially data entry. Additionally, prosecutors and defense attorneys have shared that they welcome the quality improvement of Draft One reports as they can help support and accelerate the judicial process.

The institutional review board at the University of Minnesota approved the study. Informed consent was obtained from all individual participants included in the study.

The modest number of subjects enrolled in this study may have underpowered our study to find differences in the CEWs and limit our conclusions.

The video analysis and evaluation of each participant was done by a quasi-blinded expert panel, the University of Minnesota Institutional Review Board (https://crsc.umn.edu/about-crsc), with significant volunteer exposure observational experience (thousands of human volunteer exposures). The authors of this paper were not part of the panel. Similar to our previous studies [6, 7], each exposure was rated for level of goal achievement and limb muscular capture (Table 1). While subjects endeavored to advance and accomplish the goal in each video recording, the authors evaluated the visually apparent degree of muscle capture/contraction in each of the four extremities. The “goal score” (primary outcome) ranged from 0 (for “no significant advancement towards the goal”) up to 2 (for “successful completion of the goal” of reaching the dummy). The “limb score” (secondary outcome) ranged from 0 (for “no evident capture”) up to 3 (for “complete and full capture,” i.e., “tetanic contraction”). For every participant, the expert panel decided on one number denoting the degree of incapacitation and mobility (Table 1 and 2). Median and interquartile range values were calculated for the goal achievement scores.

Conducted electrical weapons (CEWs) have been used by law enforcement agencies worldwide to control and restrain potentially violent persons. As new generations of these weapons are developed, effectiveness and safety need to be evaluated. The new TASER 10 uses an independently targeted probe scheme with floating polarities so that any two probes can form a connection. This is in contrast to older generation weapons, which used paired probes with fixed take-off angles. The expectation is with up to a maximum of 10 shots and independent targeting; the weapon will have a greater effectiveness. In this pilot study, we used our previously published, standardized methodology for measurement of CEW effectiveness on motivated human volunteers for several objectives: (1) to directly compare the effectiveness of the waveform on human subjects to an older generation weapon (the TASER 7), (2) to more broadly compare it to historical controls, and (3) to look at various probe configurations to determine their comparative effectiveness. The task at hand was to reach a suspended martial arts dummy 12 ft (3.65 m) away while being exposed (under power) to the electrical waveform of the TASER devices in various dart configurations. Several intervention groups were examined. We used video review with our standard methodology to rate goal achievement and limb capture. The results demonstrate that the TASER 10 has similar ability to induce neuromuscular incapacitation as the TASER 7. Additionally, the ability of the TASER 10 to place multiple darts on a specific target area to create the desired probe spread is a technological advantage over previous models. This, together with the floating polarity probes, promise to make the TASER 10 potentially more effective and flexible in the field.

Bozeman WP, Stopyra JP, Klinger DA, Martin BP, Graham DD, Johnson JC, Mahoney-Tesoriero K, Vail SJ (2018) Injuries associated with police use of force. J Trauma Acute Care Surg 84:466–472

Ho J, Dawes D, Miner J, Kunz SN, Nelson R, Sweeney J (2012) Conducted electrical weapon incapacitation during a goal-directed task as a function of probe spread. Forensic Sci Med Pathol 8:358–366

In alignment with our previous study results, the target area greatly influences the remaining scope of action. With the TASER 10, a higher variability in dart placement is possible and new target zones can be realized. In group 1, the dart electrodes were placed on both thighs, causing a complete lock of the lower extremities (limb capture. Each participant immediately fell to the ground, but was still able to move both arms and thus control the fall. In a real-life situation, both legs can be targeted, when the aggressor has no weapon in his hand and/or needs to control the fall due to complex surroundings. By being able to dampen the fall, head injuries can be avoided [8].

In previous studies, we established a quantitative methodology to assess the incapacitation effectiveness of a CEW exposure in humans [6, 7]. An important element of our methodology was its goal-directed nature in which highly motivated test subjects are instructed to advance towards a target while being exposed to CEW waveforms.

Multiple hits were simulated in group 5 with three darts in the upper left back (dart spread: 2 inches (3.5 cm) each) and one in the lower left back (dart spread 12 inches). In the majority of cases, a complete incapacitation could be achieved.

A low goal score and a high capture score corresponded to high incapacitation effectiveness. During the review process, the video recordings were randomized and the weapon model, probe spread, and probe location (except as obvious on video) were blinded to the raters. While the expert author raters conducted the original experiments, so were quasi-blinded, the video recording ratings were done 4 months after the experiment to decrease recall bias.

TASER7

The possibility of a larger number of single shots of the TASER 10 promises an improved incapacitation performance compared to the TASER 7.

An “off-the shelf” Axon TASER 7 was used. The TASER 10 was not yet available in its handle form-factor so the final printed circuit board and wires/probes were used. Probes were attached by hand-placing the probes at a 90° angle to the skin to the full dart depth (11.5 mm) after an isopropyl alcohol preparation of the site. Axon engineers confirmed the CEW to be operating according to manufacturer specifications with each exposure.

About Axon Axon is the technology leader in global public safety. Our moonshot goal is to cut gun-related deaths between police and the public in the U.S. by 50% before 2033. Axon is building the public safety operating system of the future by integrating hardware devices and cloud software solutions that lead modern policing, defense and security. The Axon ecosystem includes TASER energy devices, body-worn cameras, in-car cameras, cloud-hosted digital evidence management solutions, productivity software, real-time operations capabilities and third-party integrations through Axon's partner network. Axon's growing global customer base includes first responders across international, federal, state and local law enforcement, fire, corrections and emergency medical services, as well as the justice sector, commercial enterprises and consumers.

CEWs operate in part on the electrical stimulation of motor neuron axonal projections to skeletal muscles. They also elicit some minimal direct muscle tissue stimulation in the area immediately adjacent to the probes where the electric field strengths are highest. This causes an involuntary uncontrollable subtetanic muscle contraction in a person who has been hit [3]. The devices may cause more distant effects through more complex mechanisms including the stimulation of reflex arcs via afferent pathways and stimulation of descending spinal tracts [4].

In group 3, the dart electrodes were placed on opposite sides (front and back) of the body, in the upper back and lower thigh. A two-sided shot to a person is only possible with the TASER 10, due to its multiple single-shot mechanism. The models X2 and TASER 7 have two bays, but probe pairs from each bay are fired simultaneously, which makes targeting two opposite body sides impossible. Due to the large probe spread and different muscle groups activated, the majority of participants showed a complete incapacitation. None of them was able to reach the dummy.

Note to Investors Please visit http://investor.axon.com, https://www.axon.com/press, www.twitter.com/axon_us and https://www.facebook.com/Axon.ProtectLife/ where Axon discloses information about the company, its financial information and its business.

The sole exclusion criterion for participation was pregnancy, which was verified through questioning of prospective study subjects. Those who met the inclusion criteria were enrolled on a first-come, first-enrolled basis and were assigned to different groups based on probe configuration.

TASER7CEW

Incapacitation effectiveness of CEW depends on multiple factors such as the dart location, dart-to-dart-distance, individual body habitus, pain tolerance, and motivation. In earlier studies, Ho et al. [6, 7] could prove that the primary controllable factors are probe spread and location of the probes. In this study, these variables were altered in each group, representing a specific target scenario with corresponding levels of incapacitation. Traditional dart placements were analyzed and compared to new possibilities due to the multiple-shot technology of the TASER 10.

The results of our study provide additional data on CEW incapacitation effectiveness and support the results of our prior studies. It further demonstrated the technical advantages of the TASER 10. The effectiveness in incapacitation depends on the placement and distance of the electrodes and increases with the maximum dart-to-dart-distance. With the TASER 10 skin penetration of at least two darts is mandatory, which will likely be offset by the number of probe firing options provided by the 10-probe magazine.

An exposure on one upper side of the back with a 12-inch (30 cm) spread (group 4) caused immobility of both arms with the TASER 7 and TASER 10 and incomplete incapacitation of the legs.

TASERX2

"With over 27 years of experience in law enforcement, I have seen technology come and go, but Draft One is one of the most exciting innovations for law enforcement I have ever seen," said Fort Collins Colorado Police Services Sergeant Robert Younger. "Our agency has been testing Draft One, and we have seen an 82% decrease in time spent writing reports. Testing Officers have also shared that the quality of their reports has improved substantially, with Draft One including statements and actions that could have easily been overlooked or missed if done manually. Draft One has exceeded our expectations and will be a huge asset to our agency."

The results suggest that the most effective shots have a large dart spread and include an upper and lower extremity or front-to-back exposure.

Despa F, Basati S, Zhang ZD, D’Andrea J, Reilly JP, Bodnar EN, Lee RC (2009) Electromuscular incapacitation results from stimulation of spinal reflexes. Bio Electro Magnetics 30:411–21

For the groups receiving a second exposure with an additional probe (Table 4), there was a significant difference between incapacity score for the initial exposure median score 2 (95% CI 0.1–3.0) and second exposure median score 6 (95% CI 4.1–6.0). This difference was significant on Wilcoxon rank sum testing (p = 0.007).

Axon (Nasdaq: AXON), the global public safety technology leader, today announced that cash distribution leader Loomis US is equipping vehicle armored ...

Axon (Nasdaq: AXON), the global public safety technology leader, today announced that, following a competitive procurement process, it has been...

In direct comparison between the TASER 7 and the TASER 10 in group 4, goal achievement and incapacitation were comparable (Table 5).

A combined front-back placement of the darts (group 3) had a rather long dart-to-dart distance and resulted in a complete incapacitation.

Draft One is the latest giant leap toward Axon's moonshot goal to reduce gun-related deaths between police and the public. Axon developed Draft One to positively impact the trajectory of what officers can achieve, allowing them to reclaim time for more meaningful and impactful work, such as investigations, patrol, training, wellness and rest.

"Rigorous testing is essential for ensuring accuracy and ethical integrity in new technologies. I commend Axon for their proactive approach in appropriately addressing the inherent challenges that may come with large language models," said Axon Ethics and Equity Advisory Council member Broderick Turner, PhD. "Axon's dedication to refining language tone to mitigate biases, while leveraging technology for good is crucial for fostering an equitable society. I'm inspired to continue partnering with them to promote continuous improvement and innovation in public safety and believe their commitment to mitigate unintended consequences through bias testing and appropriate safeguards is the key to innovating responsibly."

In this pilot study, we used our previously published, standardized methodology for measurement of CEW effectiveness on motivated human volunteers for several objectives:

The test series in groups 6 and 7 demonstrated the technological advantage of the TASER 10 vs. the TASER 7. In case of small probe spread exposure, additional shots can secure incapacitation. In our studies, three darts were placed in the lower abdominal region with a too short dart-to-dart-distance. An additional shot widened the electrical field and thus induced more muscle contraction. Since the TASER 10 is able to shoot ten single darts independently from each other, a higher target rate with ten potential dart locations is possible. In addition, the TASER 10 darts are able to float polarity of the probes, increasing the number of dart combinations. In comparison, the TASER 7 only has two shots with four combined (two darts are being fired with each shot) dart locations.

The new 10-shot TASER 10 has a comparatively low voltage system (approximately 800 V) with a newly designed adjustable waveform. The TASER 10 does not have the ability to generate a brief high voltage phase of up to around 50,000 V to enable arcing of the waveform across a small air gap. Each dart can be fired independently, instead of the electrically paired two-dart-shots of the earlier weapons. The darts are released at a velocity of up to 205 fps (62 m/s), covering a maximum effective distance of 45 feet (13.7 m) [5]. Depending on the number of probes and their distance towards each other on the body´s surface, their polarity can be changed dynamically. This is decided by algorithm, which determines which probes have the longest distance between them and the best connection. This enables the device to establish an electrical field between any two probes on a body. However, at least two of the ten darts need to penetrate the skin in order to realize an electrical circuit between them. Currently, up to four dart combinations (four pathways) can be used to transmit electrical waveforms. In addition, through the possibility of adapting charge and pulse duration to target resistance, the TASER 10 increases efficiency compared with earlier models. This new technology enables a higher variability in dart placement, which makes it necessary to examine its incapacitation potential and limitations.

Axon rigorously tests AI-enabled products to measure inherent bias in the models before they are released. Axon also actively seeks external feedback from its Ethics and Equity Advisory Council (EEAC) and others during product development, as it has with Draft One. Input from Axon's EEAC resulted in purposeful additions to Draft One's development process and resulting product, including conducting the double-blind study to measure quality and to test for bias risks.

TASER10

However, shots to the lower abdominal region seemed to have a weaker effect than shots to the upper back or combined shots including more than one extremity. Apart from muscle contraction, no additional unexpected or adverse reactions could be detected.

Kroll MW, Adamec J, Wetli CV, Williams HE (2016) Fatal traumatic brain injury with electrical weapon falls. J Forensic Leg Med 43:12–19

Kunz SN, Dawes D and Ho J were equally involved in the implementation of the human study. They were present during all exposure, supervised the exposures and evaluated the data. Kunz SN was the main author of the manuscript, but Dawes, Ho and Knack edited it. Kanck was responsible for the statistics and overview the data.

The research took place at an Axon facility located in Scottsdale, Arizona. The participants were selected from a convenience sample, primarily consisting of individuals from law enforcement, military, and security backgrounds, but also including civilian volunteers. In exchange for their participation, the subjects received compensation in the form of an Axon CEW device. To ensure their eligibility and safety, participants completed a medical screening questionnaire, which was then reviewed by a study physician. A Hennepin Healthcare representative was specifically brought in to oversee the informed consent process. Participants were given the opportunity to address any questions they had with the study physician.

TASER7 voltage

Sweeney JD (2009) Transcutaneous muscle stimulation. In: Kroll MW, Ho JD (eds) TASER conducted weapons: physiology, pathology and law. Springer, New York, pp 51–62

Ho JD, Dawes DM, Kunz SN (2023) Safety profile of new TASER conducted electrical weapon darts. In: 11th European Symposium on Non-Lethal Weapons. European Working Group on Non-Lethal-Weapons. Conference Booklet. Brussels, Belgium, May 22nd - 25th

Built with thoughtful safeguards, Draft One saves officers one or more hours per day utilizing body-worn camera audio to produce draft police reports in seconds with greater quality and clarity

Three shots within a smaller area in the lower abdomen with an additional shot to the thigh were examined in groups 6 and 7. The second exposure and thus additional dart on the thigh increased the level of incapacitation (Table 3).

Thirty-four subjects were enrolled and assigned to eight groups based on probe configuration. There were no important adverse events observed or reported. No complications other than some minor bleeding from the dart wounds were noted, which were easily controlled with pressure and a bandage.

The probe position was one dart on each thigh — group 1, one dart on the right abdominal wall and one on the frontal thigh — group 2, two darts on the upper back and one on the frontal thigh — group 3, one dart on the upper and lower back (first exposure with T7) and on the opposite side (second exposure with T10) — group 4, two darts on the upper back and two darts on the lower back — group 5, three darts in the lower abdominal region (first exposure) and one additional dart on the opposite frontal thigh (second exposure) — group 6, three darts in the lower abdominal region (first exposure) and one additional dart on the same side frontal thigh (second exposure) — group 7, one dart on the upper arm and one dart on the same side frontal thigh — group 8. There were four volunteers in groups 1, 2, 3, 5, 7, and 8 and five participants in groups 4 and 6. A total of 48 exposures were performed, of which 14 participants received two exposures (Fig. 1).

Ho JD, Dawes DM, Kunz SN, Klein LR, Driver BE, DeVries PA, Jones GA, Stang JL (2020) The physiologic effects of a new generation conducted electrical weapon on human volunteers at rest. Forensic Sci Med Pathol 16:406–414

All authors agree with the content of this paper, and all gave explicit consent to submit and publish. The authors state that they obtained consent from the responsible authorities at the institute/organization where the work has been carried out.