On-line verification system for identification card or the like

Operating system authenticator

Optical bar code reader

Optical code readers

Optical identification system and reader for reading optical gra

Optical indicia marking and detection system

Optical reader fluorescence control

Optical reading apparatus and method

Optical system for code symbol scanners

Perforated tape reader

Personal authority verification system

Photoelectric punched card reading device

Photoelectric scanning systems for reading data appearing in an

Point-of-action billing transactor

Polynomial calculator device, and method therefor

Polyphase scanner for bar code symbols

Process and apparatus for controlling document feeding machines

Product processing system with price printer

Programable data entry system

Programmable card actuated lock