As long as the detonator is just code in the existing hardware, this would be very hard to spot.
quotingHackers are a constant source of fear and bad PR in the mind of the average person. People who know how to open and fix electronics are already suspicious to most, unless they want you to to fix something of theirs for free.
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The media drives this heavily with their portrayals always being criminal motivations and never curiosity, tinkering, or repair.
The recent supply chain attacks involved adding an explosive device to the air space in an electronic device. They are easily thwarted by opening new devices you get to see what is in there, if you know enough to know what should be in there.
I suspect we will soon see a new wave of media slandering hackers that looks a lot like the privacy "if you have nothing to hide" argument.
Why is your "warranty void" sticker damaged? Why would you need to look in there unless you are doing something that would make them target you?
If you see a damaged warranty sticker, say something.