| 摘要 |
A method for conducting a transaction, the method comprising : storing, in a database, a code in association with a first client identifier data and a product identifier data, the first client identifier data identifying a first client device, the product identifier data identifying a product of the first client device; receiving from a second client device the code and second client identifier data, the second client identifier data identifying the second client device; determining the product identifier data and the first client identifier data from the database using the received code; generating instruction data based on the received second client identifier data and the determined product identifier data; and sending the instruction data to a transaction processing system to instruct the first client device to release the product to the second client device. |
