A Joule thief is a specific inductive boost-converter topology, typically using a coupled inductor. Battery imposes the same space/weight costs. That seems unnecessarily complicated for this applicati...
Yeah people didn’t seem to catch on weight differences from some videos I saw, some had a huge ass battery inside.
Still, some Samsung TV controllers claim to harvest power from thin air (actually induced voltage from radio waves or whatever), that could be one way of powering as well. The attacker certainly can wait for that kind of system to slowly charge a capacitor.
I am rather surprised at how these devices seem to have a number of exposed pads, if you can’t design an obstructed silicon like Apple at the very least give the whole thing a resin bath or something.
Still, some Samsung TV controllers claim to harvest power from thin air (actually induced voltage from radio waves or whatever), that could be one way of powering as well. The attacker certainly can wait for that kind of system to slowly charge a capacitor.
I am rather surprised at how these devices seem to have a number of exposed pads, if you can’t design an obstructed silicon like Apple at the very least give the whole thing a resin bath or something.
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