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Method of controlling a transaction

Patent image
NSA

A method of securely authenticating a user's response to a challenge request before completing a transaction is disclosed. When a user wishes to complete a transaction, an image is projected onto the user's face. The user reads the image in a mirror and responds accordingly. If the user identifies the correct image, the transaction is allowed to proceed.

Inventors: 
Olthoff, Kenneth George
Patent Number: 
Technical domain: 
IT and Software
FIle Date: 
2007-12-06
Grant Date: 
2014-11-11
Grant time: 
2,532 days
Grant time percentile rank: 
46
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
NATIONAL SECURITY AGENCY