Patent ID: 11887111
Assignee: TENDYRON CORPORATION
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. The method according to claim 1, further comprising:
performing an online connection, by the first security control module, with a back end through the first communication module;
transmitting, by the first security control module, the first transaction record and the current available balance to the back end;
receiving, by the first security control module, an offline electronic currency issued by the back end based on the current available balance after the back end confirms that the transaction record and the current available balance are correct;
controlling, by the first security control module, the first file storage module to store the offline electronic currency; and
deleting, by the first security control module, all electronic currencies stored in the first file storage module, wherein a denomination of the offline electronic currency is the current available balance.