Welcome to the Phoenix Freeze — Phoenix Freeze
http://www.phoenixfreeze.com/

14 day trial then $10 to purchase. No Win7 or 64 bit support as of 5-13-09

lock tool

Mobile phone bluetooth enabled security which locks itself as you walk away with your Blackberry or iPhone and unlocks as you return.

Phoenix Freeze enables you to automatically lock and unlock your laptop with just your cell phone. Save battery life and protect your files just by walking away.

Supposedly has better proximity control features, but it replaces the winlogon GINA, supposedly has BIOS compatibility issues, continuously broadcasts so it exposes you, and can not work with a bluetooth mouse or keyboard...

Poner en HIbernacion tu ordenador cuando alejas una fuente Bluetooth, por ejemplo el movil

Often the best ideas are the simplest. A laptop which locks itself as you walk away with your Blackberry® or iPhone™ and unlocks as you return

Da un'idea di Giuseppe "Gippa" Paternò, un libro on-line sulle architetture di sicurezza e relative implementazioni.