Obu is a vehicle-mounted interactive unit, also known as electronic tag. It's called obu to apply to the bank now. Obu includes power control, power management, vehicle information management and communication module. At the same time, at present, the market is still dominated by two-piece obu, that is, the obu and the user card are separated. The country is promoting single-chip obu, so cars don't need to stick obu, and they are directly integrated into cars.

Therefore, the owner must provide the publisher with the owner's information and the selected payment method in advance, apply for and install obu, so as to realize non-stop traffic on highways and other occasions.

Usually the payment method is a card inserted in obu. This card can be a stored value card, a debit card or a bank card. At present, most people choose debit card or bank credit card.