The chip on the bus card is in the top left corner.
Bus IC card is a non-contact data card, it is through the chip integrated in the card through the inductor coil on the card (inductor coil is a coil wound by copper wire) at both ends of the coil through the action of various circuits to make the inductive current into DC, and then from both ends of the DC into a relatively large capacitor, The voltage at both ends can be kept stable, and two lines are drawn from both ends of the coil to the chip as signal transmission lines. When approaching the card reader, the coil generates an induced voltage, which can transmit data between the card and an external database.
The magnetic strip chip of the bus card is behind the \"pass\" word of the card, and it is a four-corner chip. The coil is all around, about 3 millimeters from the edge. The Beijing Municipal Transportation Card is an integrated circuit card with only a high-tech chip in each card. The chip has electronic wallet and other functions, and can store multiple payment records and recharge them repeatedly.
Take out the bus pass and shine the flashlight on the top left corner of the bus pass. The bright light should reveal the location of the bus card chip, and there are four leads around the rectangle.
Bus card according to the reason inside is a circle of coils, you can use a flashlight to stick very close and then through the card to see the coil, and the coil according to a specific law will produce electromagnetic waves, I feel like the electromagnetic signal in the hand will affect the electromagnetic card, so it will not brush out.