Disclosed is an optical current/voltage measurement apparatus comprised of an optical current/voltage sensor assembled in a unit and a light signal computing apparatus. The optical current/voltage sensor includes a linear polarizer for linearly polarizing the input light, some of which passes through...http://www.google.ca/patents/US6301375?utm_source=gb-gplus-sharePatent US6301375 - Apparatus and method for identifying individuals through their subcutaneous vein patterns and integrated system using said apparatus and method
