POS (Point Of Sale) systems work?

Jun 22, 2010

First, My project is to develop a loyalty system similar to air miles. The objective is to capture items bought in stores by means of a magnetic stripe card. The problem is I dont know how POS (Point of sale) systems work. Do I need to contact all the grocery stores individually or do I need to contact all the POS software designers individually?

Second, The objective is not just to capture a number from the card but to actually have access to the individual items bought at the store by means of the card in the form of a database.

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