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US20090182673 TOKEN BASED NEW DIGITAL CASH PROTOCOLS WITH COMBINED BLIND DIGITAL SIGNATURE AND PSEUDONYM AUTHENTICATION  
Digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair...
US20080243703 VIRTUAL ACCOUNT BASED NEW DIGITAL CASH PROTOCOLS WITH COMBINED BLIND DIGITAL SIGNATURE AND PSEUDONYM AUTHENTICATION  
Virtual account based digital cash protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with...
US20080243702 Tokens Usable in Value-Based Transactions  
Techniques for generating a token that can be used to transfer value. The token may be used to transfer value in a value-based transaction with a vendor in a way that is secure and safe and...
US20080040286 Method of Anti-Fraud for Credit Card  
A method of anti-fraud for credit card applicable to a card-issuer to prevent an issued credit card from being cheated, with the method a cardholder may divide his Maximum Credit Line given by the...
Matches 1 - 4 out of 4