While Hidden is a proprietary Mac app, Prey is an open source, multi-platform alternative. Available for Windows, MacOS, Linux, and even Android, Prey lies dormant, waiting for a signal to activate itself and phone home with your device’s latest location, screen captures, and snapshots from your laptop’s buit-in camera.
UPDATE: If you’re not completely sold on Prey, check out this Storify of Sean Power tracking down his stolen laptop Man tracks stolen laptop hundreds of miles away, calls thief - storify.com
If your organization needs to track more than three devices, Prey now offers pro plans, with higher limits as well as advanced features such as:
- hardware scans and change notifications
- increased updated frequency up to 2-minute intervals
- SSL encryption of data
- automated deployments to devices
Best of all, since Prey is open source, you have a chance to contribute.