A decade ago, did some extensive UX work on buttons using the power button. They used 10 presses as their trigger, and still got far too many false positives. Their conclusion was power button triggers were not workable. reached a similar conclusion back then. I guess missed that research: they shipped with a 5-press trigger, and now emergency services numbers are receiving record numbers of false calls:

arstechnica.com/gadgets/2023/0

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