Check out our deal on the Sesame 2. It's a keyfob that will lock your Mac when you walk away and unlock it when you come back. Without you doing anything. It's small enough, you could keep it on your keyring, attach it to a lanyard or your ID badge, or just keep it in your pocket. Stack Social is sending me one, and I'll be reviewing it. For now, though, you can get one for $29, $10 off the regular price.
Check It Out: Sesame 2 Wireless Auto-Lock for Mac: $29
