Cables Unlimited Automatic USB 2.0 PC Lock

eCOST.com via eBay Daily Deal offers the Cables Unlimited Automatic USB 2.0 PC Lock, model no. USB2200, for $8.99. With free shipping, that's the lowest total price we could find by $3, although we saw it for $3 less in September. This security device automatically locks a PC when the user is more than six feet away from the computer. A wireless transmitter is also included. Deal ends March 14 at 6:49 pm ET.

Update: As a reader notes, it's not supported in Windows Vista or Windows 7.