Methods, Devices and Computer Program Products for Voucher Access Code Creation and Management

A device (120) that provides refills for pre-paid subscriptions, the device being characterized by:

• a memory (230, 240, 250, 400) to:
• store a table (430) that includes batches of vouchers, the vouchers in each batch being sequentially ordered by serial numbers associated with the vouchers;
• and
• a processing unit (220) to:
• receive a voucher activation code associated with a subscriber account,
• process the voucher activation code to obtain a serial number, the processing including performance of a decryption operation, and
• retrieve a voucher from the table using the serial number to identify a voucher for use in updating the subscriber account.

A computer-readable medium storing instructions that, when executed by a processing unit (220) of a device (120), cause the processing unit to perform a method that includes receiving a voucher activation code for a subscriber account, the method characterized by:

• processing (810) the voucher activation code to obtain a voucher serial number, the processing including performance of a decryption operation;
• identifying (815) a voucher in a table using the voucher serial number, the table storing vouchers in batches, where the vouchers in each batch are sequentially ordered by serial numbers associated with the vouchers;
• and
• enabling updating (825) of the subscriber account based on the identified voucher.