The claimed subject matter relates to an architecture or arrangement that can limit access to sensitive information by means of encryption. In particular, data obtained from a payment instrument at, e.g., a Point-Of-Sale (POS) location can be encrypted at an early stage such that a POS (or another) application...http://www.google.co.uk/patents/US7451926?utm_source=gb-gplus-sharePatent US7451926 - Securing payment data
