An information entry and reporting system and method for tracking data associated with retail transactions at the point of sale. Transaction data is converted into a machine readable dataform pattern and printed onto a sales receipt provided to the purchaser. Subsequently, the purchaser uses a suitably...http://www.google.ca/patents/US6533168?utm_source=gb-gplus-sharePatent US6533168 - Method and apparatus for computer-readable purchase receipts using multi-dimensional bar codes
