MHA announced the immediate availability of Airlock on Tuesday. Airlock is a Mac OS X application that auto-locks and unlocks your computer based on the proximity of your iPhone or iPod touch.
The application uses Bluetooth to determine your iPhone or iPod touch's location and unlocks your Mac when in range, and relocks your computer when out of range. Other actions can be triggered when coming in range, such as refreshing Web pages, logging into iChat, or taking photos with your Mac's iSight camera.
Airlock requires an Intel-based Mac running Mac OS X 10.5 or higher and an iPhone or iPod touch with built-in Bluetooth support. It is priced at US$7.77 and is available for download at the MHA Web site.