In a system for carrying out finanical transactions via facsimile machines, account customized transaction vouchers are completed by at least one party to a transaction. The transaction vouchers issued to that party contain thereon a series of pseudo random alphanumeric characters with a different set...http://www.google.com.au/patents/US5122950?utm_source=gb-gplus-sharePatent US5122950 - Method of and system for electronic funds transfer via facsimile machines
