Can I borrow an adult bus card?

You can borrow an adult bus card and charge for it;

Bus IC card is a non-contact data card. It changes the induced current at both ends of the coil into DC through the inductance coil on the card (the inductance coil is also a coil made of copper wire) and through the function of the chip integrated in the card, and then combines a relatively large capacitor at both ends of the DC to keep the voltage at both ends stable, and then leads two wires 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.