Open-loop cashless gaming system and method using smart data...

Operating system and methods for seeding a random serial...

Operation data recording system

Operation management apparatus

Operator with transmitter storage overwrite protection and...

Opinion sampling device

Optical card reading system

Optical coin sensing station

Optical interference authenticating means

Optical memory card based e-commerce business method

Optical reading apparatus and data processing system

Optical sensing device for detecting optical features of...

Optical sensing device for detecting optical features of...

Optical sensing device for detecting optical features of...

Optical sensor with planar wall

Optical testing for genuineness of bank notes and similar...

Optical trigger for postage meter

Optical vend-sensing system for control of vending machine

Optically variable security element

Optically-based methods and apparatus for performing...