Offline transaction method, client equipment and POS machine

Abstract

The invention discloses an offline transaction method, client equipment and a POS machine. The offline transaction method comprises the following steps: obtaining a transaction permission certificatecomprising a valid date from a payment platform server; displaying a scanning code when a transaction is carried out with the POS machine, including a transaction permission certificate and a previous transaction record; receiving a new transaction record sent by the POS machine through Bluetooth, wherein the new transaction record is generated by the POS machine according to a transaction amountand a previous transaction record after the POS machine verifies that the transaction permission certificate is in a valid state, and the valid state comprises that the valid date is later than the current moment; and storing the new transaction record for use in the next transaction with the POS machine. By adopting the offline transaction method, a safe and convenient implementation scheme canbe provided for offline consumption of a client mobile phone user, and a recharging merchant does not need to install a special terminal, and a card holder can conveniently perform recharging, and offline operation can be realized, and recharging and consumption operation can also be completed in some places with poor wireless network coverage.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for off-line transaction, a client device, a POS machine and a storage medium. Background technique [0002] The existing mobile payment technology generally adopts a near field communication technology (NFC, Near Field Communication) for payment. However, the configuration cost of NFC is high, and mobile devices with NFC are not very popular. Therefore, the popularity of using NFC technology for payment is limited. [0003] In addition, when using other related technologies to recharge the account, the recharge forms generally adopt the following two forms: first, the cardholder directly pays the merchant and provides the recharge account information to the merchant, and then the merchant's terminal machine checks the corresponding The account is recharged; secondly, the cardholder's mobile device is logged into the online platform to connect with the se...

AI Technical Summary

Problems solved by technology

However, the former requires merchants to install dedicated terminals. At the initial stage of system deployment, there are few cardholders using payment platforms, and it is difficult to find enough merchants to install terminals, which in turn makes it difficult for cardholders to find a place to recharge.

The latter requires cardholders to operate online during the recharge process, but in some backward countries, wireless network coverage is not good, so the places where recharge can be limited will also be limited, and it cannot be popularized on a large scale

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