Method and apparatus for obtaining and using event data...

Method and apparatus for obtaining product use information

Method and apparatus for obtaining vehicle data

Method and apparatus for offset error correction

Method and apparatus for personal identification

Method and apparatus for personal identification

Method and apparatus for producing electronic devices which...

Method and apparatus for providing a hazardous material alert

Method and apparatus for providing secure access to a...

Method and apparatus for secure identification and verification

Method and apparatus for validating vehicle operators

Method and apparatus for validating vehicle operators and...

Method and apparatus to facilitate use of background noise...

Method and arrangement for optically representing industrial...

Method and arrangement for verifying items of mail

Method and device for access control

Method and device for acquiring, recording and utilizing...

Method and device for automated access control of air...

Method and device for indicating future need for product...

Method and device for keeping watch over premises