The bus failed to scan the code, but the money was deducted

The bus failed to scan the code, but the money was deducted because of network communication problems.

I. Network communication issues

On the bus, UnionPay China UnionPay Express QR code swiping transaction was launched. Due to the problem of network communication speed, the bus carrier did not receive the news of successful fare deduction, which delayed the voice prompt that hindered the success of fare deduction, resulting in passengers deducting the fare several times in succession.

Second, static code analysis succeeded.

Because the bus line of the Expo is a temporary transfer vehicle, the driver is not familiar with the line signal. In view of this continuous charge deduction, our company has issued a notice to all drivers, making it clear that if the POS machine gives a voice error of "code scanning failed", the passenger's mobile phone displays a message of successful charge deduction, or the passenger receives a debit message from the bank, it will be regarded as successful code scanning, and the passenger does not need to scan the code continuously to avoid overpayment. At present, the matter has been communicated with the parties, and UnionPay has made compensation.

: CPU card is generally used to take the bus in the city.

1, bus card

There are special bus cards, mobile phone NFC bus cards, and bus cards used with bank cards, which can be used as both bank cards and bus cards. There is also a mobile bus card that is put together with the SIM card of the mobile phone. You can swipe your mobile phone on the bus, and you don't have to bring a bunch of pocket money when you go out. 20 15 65438+ 10/0/5 The Ministry of Transport issued the Opinions on Comprehensively Deepening Transportation Reform. According to the "Opinions", the Ministry of Communications has studied and formulated a framework for the development of smart transportation to realize national networking such as ETC and bus card. The CPU card refers to the integrated circuit card, and the bus card we usually use is one of the CPU cards. It is more convenient to use a bus card. You don't need to prepare change, just swipe your card in the car. Generally speaking, it is more favorable than small change. In many places, coins cost one yuan and credit cards cost eighty cents.

2. The principle of bus card

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 merges 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.