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Perhaps a microwave oven can fry the input stage to the radio receiver, which presumably has an antenna hanging off it and so is more susceptible to damage, whi
by femto 13y ago
Perhaps a microwave oven can fry the input stage to the radio receiver, which presumably has an antenna hanging off it and so is more susceptible to damage, whilst leaving the rest of the chip intact? Anyone tried this?
- diffsir 13y agoDidn't your mother tell you to never put metal in a microwave? Yes the chip will fry.
- sp332 13y agoYou only need to put it in for a couple of seconds to fry it. Many cards do not respond well to this https://www.youtube.com/watch?v=bBk8yZcyt5g https://www.youtube.com/watch?v=bBk8yZcyt5g A better way is to find the chips (either look for the raised part, or shine a high-powered flashlight through to look for it). Then you can crack it with a hammer, or peel a tiny piece of the card off and take it out.
- lgeek 13y agoThat will probably visibly damage the card (I expect the loop antenna would get really hot) and it would disable the chip-and-pin feature as well, making the card useless. I've had a MIFARE card crack starting from an edge, sectioning the loop antenna. I couldn't get it to work again even if pressing the two sides together, and it wasn't visible unless pulling the two sides apart, so this seems like a better approach.
- femto 13y agoIt would be an interesting experiment to try and do it closed loop, in an effort to dump enough energy in to damage the radio front end, but not overheat the rest of the circuit. Have a computer with a card reader interrogating the chip via the near field, and cutting the power to the microwave, via a relay, as soon as the chip stops responding?