Use a flashlight to locate the chip, reserve a little more space, cut it out with scissors, soak it in the degluing solution, remove the chip, wrap the coil with enamelled wire, and solder it on. The degluing solution I used is chloroform, acetone, ethyl acetate in a formula of about 2:2:1
The IC card is glued together by two sides, and the coil and chip are placed between the two sides, and the coil can be obtained as long as the middle is broken
If it is a Q type, it is easier to open one side, and you can see the coil and chip inside. If it is card type, then there is only one way, is to use an organic solvent to dissolve the outside card, and the remaining is the antenna and chip inside.