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I don't think this is a good way to initiate the destruction.

Washing hands, sweating, condensation from beverages, etc. could easily trigger this.

But you want to trigger it, to keep the data safe. Though if the adversary has sweaty fingers they also get your data.

You could use a scheme kind of like how port-knocking works. For example, plugging in directly causes self-destruct, but plug and unplugging twice in 5 seconds will be the "okay it's me" signal.

This could be implemented by writing a timestamp file on wakeup.

> This could be implemented by writing a timestamp file on wakeup.

You’d need to embed a clock and an energy source to keep the clock going.

A 150uF capacitor should keep the microcontroller running for about 5 seconds without power; it could keep time. 7.3mm x 4.3mm x 2.9mm

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