UnionPay mobile phone flash payment relies on near field communication, payment marking and other technologies, which makes payment extremely convenient and ensures payment security.
UnionPay mobile phone flash payment supports HuaweiPay, MiPay, OPPOPay, vivoPay, ApplePay, SamsungPay and MeizuPay.
The principle of unrelated transactions is that there are chips and coils in the bank card. When the card is close to the unconnected module, the coil generates current due to electromagnetic induction, and the chip is electrified. At the same time, the coil is used as an antenna to receive the read-write request signal of the non-connected module, and the chip calculates the signal. At the same time, the non-receiving module (acquisition device) also calculates the signal and initiates the transaction after the calculation is completed. Therefore, when two or more cards contact at the same time after the receiving device sends a signal, the card swiping will fail, because the device cannot distinguish which card initiated the transaction.