A method and apparatus for providing and using a variable format, configuration and location keyboard image which enables a digitizing device to present a different keyboard configuration and/or location to each user so that detection by an unauthorized viewer of a personal identification number (PIN)...http://www.google.fr/patents/US5949348?utm_source=gb-gplus-shareBrevet US5949348 - Method and apparatus for variable keyboard display
Method and apparatus for variable keyboard display
