A transaction processing system and method

A method of dealing with a transaction over a computer network, comprising the steps of:

• providing a token in place of an account identifier to a point of sale system;
• providing a non-transactional message to the point of sale device;
• instructing the point of sale device to provide the token to an acquiring computer system;
• and
• instructing the acquiring computing system to pass the token to the transaction processing system for de-tokenization.

method of dealing with a transaction over a computer network, comprising the steps of:

• providing a token in place of an account identifier to an on-line sales processor;
• providing a non-transactional message to the on-line sales processor;
• instructing the on-line sales processor to provide the token to an acquiring computer system;
• and
• instructing the acquiring computer system to pass the token to the transaction processing system for de-tokenization.