Non-repudiation watermarking protection based on public and...

Obfuscation of executable code

Obtaining temporary exclusive control of a printing device

Off-line economies for digital media

Offline access in a document control system

Offline playback of advertising supported media

One time passcode system

Online publishing portal for controlling brand integrity

Optical disc, illegal copy finding system and method using...

Optical imaging device with motion sensing accelerometers...

Optical jukebox with copy protection caching and methods of...

Optimization of distributed anti-virus scanning

Origin and custody of copies from a stored electronic record...

Originator authentication using platform attestation

Parental controls for entertainment content

Password methods and systems for use on a mobile device

Plug and play device and access control method therefor

Portable information processing device having data...

Portable information terminal, and electronic information...

Portable recordable media anti-theft system