A Cheap Disposable PPE Device for low to moderate risk areas

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A small Device that reminds you to not touch your face

Currently in the process of first production run.

Currently looking for a Silicon Manufacturer with high output please contact us. Our current supplier will not meet our demand.

ShockBIT is (2) small disposable electronic devices that attaches to a users wrists and will monitor hand motion and when the hand position is close to face (Above the shoulders) will emit a small, harmless electrical pulses (no more than 1 Second) to that wrist or Vibrational Stimulus.  This electrical pulse or small vibration is intended to silently alert user that their hands are in close proximity to the face.  ShockBIT is design for easy to use user experience to lightly remind users to refrain from unnecessarily touching their mouth, nose, and eyes.

What is ShockBIT:

ShockBIT consists of a Silicone band with a pocket that houses the electronic components.  The Electronics are a simple Microcontroller, Coin cell Battery, Button, low power Accelerometer do detect an inversion of the board, and a Boost controller with Copper Electrodes or Vibrational Motor to make contact with the users skin.


Our device will slow the rate of infection by providing awareness for citizens outside of their homes to not touch their face. A February WHO report predicted that 85% of the cases in China may have been undocumented, and it spreads outside of clinical environments through surfaces and personal interactions. Even regular disinfection can leave almost 15% of infectious agents on surfaces; so people are advised to wash their hands and not touch their face. Even for trained personnel, people touch their face at least 12-20 times an hour involuntarily.

This has resulted in infection rates (Ro) between about 2.4 - 4, meaning one infected person will transmit it to about 3 others. As of April 21, 2020, U.S. cases were at ~800k out of 328.2 M people ( 1/400 ); if the virus spread to 2.75 new people for every infected person, the country will be facing percentages of its population on par with New York in a week (3.75/400). Social distancing has proven effective to slow the rate of infection, but this gives us a slim time window to prepare. Even with social distancing, the virus has been found in more the 75% of the counties in the US, many cases appearing within the last 2-3 weeks. Almost 20% of the US counties report cases more than 100.

Manufacture/distribution of PPE and ventilators still may be insufficient to respond within our timeline, and these solutions only focus on the end of the infection life- cycle. If a person can avoid involuntarily touching their face when in at-risk environments (shopping, doctor, gas), the Ro value would decrease when coupled with social distancing and regular hand washing. Ro values in the 1.5-2 range will significantly delay the spread of covid-19, providing weeks to months of additional prep time. The additional time also gives hospitalized patients time to recover and free bed-space and resources.

More than 95% of the US population remains uninfected at this time. If the death rate stays low at 80/million, this will result in almost 25,000 deaths, but that rate is skewed by places in the US that have yet to be hit hard. The NYC death rate is 552/million meaning 180k people would die in the US if we get overwhelmed and experience a NYC everywhere. When/if travel and business restrictions are lifted, it will become increasingly more important to maintain proper hygiene practices to prevent the rapid spread in areas not yet hit. Providing help to essential workers can help protect them as well. Slowing down Ro is our best chance at achieving this goal and our device is the only current design ready for immediate mass production to meet covid-19 on the front lines as people encounter it in their daily lives.

  • 2 × 100k 0402 Resistor
  • 3 × 10k 0402 Resistor
  • 1 × Zener diode Sod123
  • 1 × B130LAW Discrete Semiconductors / Diodes and Rectifiers
  • 1 × LPS3010-223MRB 22uH inductor

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kalmenolver wrote 05/17/2023 at 19:00 point

There has been a great deal of value to me in my involvement with the project. Would like to share it with the rabbit feeding team so they can also read it and implement something new.

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Hemanth331996 wrote 08/03/2020 at 16:23 point


Nice Work!!!.When can we expect the product into the market..?

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Hemanth331996 wrote 08/03/2020 at 16:19 point


looks like nice work. At what stage the project is in ?. when can we except the product../?

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Entunassa wrote 06/30/2020 at 03:51 point

John, I would ask and suggest to calculate in milliamps per hour (mAh) to be precise, e.g. for battery life time and amount of consumed energy-per-day.

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Yann wrote 06/02/2020 at 10:12 point

What is the current status of the project ?

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Pierre Rossouw wrote 05/05/2020 at 05:27 point

This could also be an app on a smart watch 

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John Loeffler wrote 05/06/2020 at 21:38 point

It is

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Daniel Franzen wrote 07/22/2020 at 12:15 point

Nice project.
I just added an app inspired by this project to the Samsung Store. Obviously it cannot shock you and is only one arm, but rumble already goes a long way. Get it on Gear S3 or Galaxy Watch:

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Micah Elizabeth Scott wrote 04/30/2020 at 16:17 point

why not a cloth mask... reusable, better for the environment, also reduces droplet transmission, protects your face instead of just zapping your hand

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Eder Neumann wrote 05/05/2020 at 11:23 point

the eficiency of both are cumulative, if you are using the mask you still can rub your eyes, that makes your only protection inefective. 

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ciplionej wrote 04/22/2020 at 22:55 point

Hi John, congrats, very interesting project.

Couple of questions for the uninitiated:

1. Why zap and not vibrate or just beep?
2. From the ST website, it looks like the LIS2DH12TR has programmable features that might allow you to ditch the microcontroller altogether and trip the "alarm" directly from the sensor. Could you trigger the alarm using the programmable decision trees in the IC?
3. Do you think it could be possible to make a thinner, lighter, textile armband with fewer components if 1 and 2 were feasible?

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John Loeffler wrote 04/23/2020 at 00:34 point

Hey Fernando, 

1) we have tried to us a vibrate,  The thing is it can do this but we would have to use LIR Batteries (Lithium). Normal coin cell battery can only provide 30mA current before the voltage gets to low the MCU shuts down.  Using an electrical pulse draws significantly less current in the 1-2mA range for the same Effect 

2)Thanks for that I didn't realize we could use the accelerometer to drive alone by seeing the bits.  

3) The goal is to get the components down as much as possible (if we are to scale up this is a giant bottleneck)  so thank you for your suggestion I am looking into it tonight.

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Stephen wrote 04/22/2020 at 13:59 point

Added some discussion based on numbers from yesterday. Helping regular folks to maintain recommended precautions can have a very large impact on 'the curve'

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John Loeffler wrote 04/12/2020 at 02:08 point

thank you. I didn’t consider that an have been looking into TPE’s that are more biodegradable. Turns out it may be a much cheaper option as well

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Micah Elizabeth Scott wrote 04/30/2020 at 16:18 point

but the battery, microcontroller, PCB... all very heavy-weight manufacturing processes that require specialized resources and produce significant pollution

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amd_athlonxp wrote 04/10/2020 at 23:08 point

What type of microcontroller do you use?

What will be happen if a student pull up his arm to sign to the teacher that he know something?

Are there cases in movement possible where the device makes an error?

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John Loeffler wrote 04/16/2020 at 01:05 point

Right now we are using an atmega168. but will migrate to the Attiny

The device will vibrate/electrically pulse when in upward position for a duration of 20ms (Filters out jerks of the hand). it will trigger once when in the upright position and will be less than 200ms vibrational/pulse and will reset when returns to neutral position.

It will trigger if you raise your hand (it will vibrate pulse once). That being said it is early noticeable.  it is no more then the tactile feedback you feel with you cellphone when using twitter or instagram.  It will not prevent you from touching your face,  it is simply there to alert you to unintentional face touching. 

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amd_athlonxp wrote 04/16/2020 at 02:43 point

Thank you for the answer.

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Chris.Hicks wrote 04/08/2020 at 00:45 point

This is very clever.  Nice work.

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John Loeffler wrote 04/08/2020 at 00:48 point

Thank you, Like yours too

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