The invisible mask

Reduces self-inoculation and transmission of pathogenic germs. Can be also used for gesture control

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We touch our faces unconsciously 20 to 30 times per hour. Not a good habit during a pandemic. The device can be clamped to the peak of a baseball cap or similar. On the bottom of the device is an array of ToF sensors placed that scan the field of view. If the hands come too close to the face, a vibrating alert is triggered.

The first thing we notice is that we can use the device not only as a Don't-touch-your-face-reminder. If we add a Bluetooth module, we can connect it to our smart phone and use it in addition for gesture recognition, so it becomes a smart cap. Device can be configured and trained via smart phone App.


Adobe Portable Document Format - 827.82 kB - 04/02/2020 at 22:55



Adobe Portable Document Format - 1.59 MB - 04/02/2020 at 22:55


  • Dev boards

    M. Bindhammer04/04/2020 at 15:26 0 comments

    Decided to divide the project into subprojects and design a number of dev boards before merging them into a single board. Start with the sensor dev board, will be equipped with three VL6180X sensors.

    Soft on/off dev board with safe shutdown:

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Richard Hogben wrote 05/19/2020 at 15:36 point

At first I thought it was something like an airblade fan, or those invisible car windshields to blow the germs away :P

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Dan Maloney wrote 04/03/2020 at 17:23 point

I'm 100% convinced my brain would quickly learn the sneaky side route to my face and I'd end up touching anyway. But I like the idea, and I clearly see the need for a passive reminder system like this.

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M. Bindhammer wrote 04/03/2020 at 20:31 point

Would be an interesting experiment.
Technically it's no problem to cover the whole face area using a couple of wide Field-of-View sensors, for example Chirp’s MEMS ultrasonic ToF sensor CH-101, datasheet can be found in FILES.

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