Nehmo
10 kW
RFID tags are becoming more prevalent, and being able to turn them off is becoming more important. You can block the radio transmissions to and from a device simply by covering the device with foil, but disabling the cip is most effective.
A passive RFID device is an antenna attached to an accompanying chip, and physically destroying the chip or disconnecting the antenna works, but it's crude in terms of procedure. I'm looking for a non invasive method. You can see one such non invasive method at store point of sale cash registers. They use a disabling-mat. I suspect the mat is just a coil with some kind of AC going through it.
Once, as a kid, I had a jig saw, the kind that just vibrated the blade up and down. It was done by an electromagnet attached directly to the 120V 60cps line. I think that kind of coil would work to kill an RFID chip. I don't have a magnet like that now. But maybe I could find some other similar device. What kind of electro- thing commonly available has a decent electromagnet inside, something that could be used to zap an RFID tag?
A passive RFID device is an antenna attached to an accompanying chip, and physically destroying the chip or disconnecting the antenna works, but it's crude in terms of procedure. I'm looking for a non invasive method. You can see one such non invasive method at store point of sale cash registers. They use a disabling-mat. I suspect the mat is just a coil with some kind of AC going through it.
Once, as a kid, I had a jig saw, the kind that just vibrated the blade up and down. It was done by an electromagnet attached directly to the 120V 60cps line. I think that kind of coil would work to kill an RFID chip. I don't have a magnet like that now. But maybe I could find some other similar device. What kind of electro- thing commonly available has a decent electromagnet inside, something that could be used to zap an RFID tag?