Open the on file with the key, and then look at whether there is an indicator light similar to the key on the instrument, and the two actions should be carried out at the same time, if there is a chip. The key chip in a modern car is an integrated circuit block called a magnetic chip system. Magnetic chip systems are passive in nature. The car ignition lock has a chip with its own reading coil, because the key chip relies on this reading coil to identify. Not all car keys have a chip, and depending on the brand of the car, you can tell if there is a chip inside.