Transaction data capture system for a point of sale system

A method comprising:

• initializing, by a processor of a point-of-sale (POS) terminal, a sniff daemon as a background process executing on the POS terminal, the background process being a separate process from a POS application also executing on the POS terminal;
• detecting, by the processor configured by the sniff daemon, presence of a transaction document in a memory of the POS terminal, wherein the POS application generates, upon verification of a payment made for a sales transaction via the POS application, a transaction document and stores the transaction document to a memory of the POS terminal;
• collecting, via the sniff daemon without interaction with the POS application and before the transaction document is sent to a printer, the transaction document from the memory;
• interpreting the transaction document to determine a field entry;
• and
• sending a message to a collection server external to the POS terminal based on the field entry.

A method comprising:

• receiving, at a collection server system, a transaction document from a point-of-sale (POS) terminal external to the collection server system;
• optically recognizing, at the collection server system, the transaction document to determine a sold item associated with the transaction document;
• matching, at the collection server system, the sold item to be within an item list;
• and
• recording, at the collection server system, the sold item on a web service system.

A system comprising:

• a printer;
• a point-of-sale (POS) terminal configured to execute a run-time sniffer daemon and separately a POS application, wherein the POS application is configured to:
• verify a sales transaction,
• generate a transaction document based at least partly on the sales transaction to print the transaction document to the printer,
• wherein the run-time sniff daemon is configured to detect the transaction document in a print queue memory and to transmit the transaction document to a collection server system external to the POS terminal for interpretation;
• and
• the collection server system configured to:
• receive the transaction document from the POS terminal,
• optically recognize a sold item entry from the transaction document,
• match the sold item entry to be within an item list, and
• record the sold item entry on the collection server system.

A point-of-sale (POS) terminal comprising:

• a processor;
• a non-transitory memory storing executable modules operable when executed by the processor, the executable modules including:
• a POS application configured to execute a sales transaction by generating a transaction page based at least partly on the sales transaction and by spooling, to print at a printer, the transaction page to a printer queue portion of the non-transitory memory;
• and
• a sniffer module configured to detect presence of the transaction page in the print queue portion and transmit the transaction page to an external system for interpretation.