The pcProx Sonar provides users with the first software-free
solution for auto-locking un-attended computers. pcProx
automates the locking of the PC when you step away.
When you leave the proximity of the PC, pcProx locks the
system without requiring any user intervention!
No need for awkward time-out settings that mistakenly lock
the PC when you are present. The pcProx will detect your
presence and not lock the system inadvertently.