Kantech P40KEY ioProx XSF/26 bit Proximity Keytag (100 Pack)

you ever wondered what's inside those profs cards using a blow dryer you can actually release the glue and open them up so how do they work anyways well the copper wire is the antenna when the card is brought near scanner the scanner energizes the coil providing power to lil black integrated circuit a rolling code and an identifier is stored on the chip which then shorts the coil in a series of ones and zeros which a scanner can pick up to use to unlock the door and if you don't want to carry it around your prox card want to integrate it into your cell phone or just your cell phone case if you enjoyed this video perhaps you like my other videos