System and method for remote management of sale transaction data

A computer system for managing retail transaction data comprised of at least one server and a first computer connected over a data network, said server and first computer comprised of memory comprised of program data that when executed causes the server and first computer to:

• install on the first computer an instance of a register software comprised of program data stored in the memory of the first computer;
• generate on the first computer a data security code data value;
• transmit the data security code data value to the server;
• at the server, use the data security code data value to execute a security protocol to modify at least one of a predetermined set of database records so that the predetermined set of database records are logically linked to the register instance running on the first computer;
• receive into the first computer a payment data token from a payment device;
• generate by the register instance running on the first computer a transaction data comprised of an item identifier data value and a transaction security token data;
• transmit the transaction data from the first computer to the server;
• at the server, use the transaction security token comprising the transaction data to execute a security protocol to verify that the transaction data is valid;
• at the server, execute a selection protocol using the transaction security token to select the predetermined set of database records linked to the register instance running on the first computer;
• and
• at the server, update at least one data record in the selected predetermined set of database records using the item identifier data comprising the transaction data.