Password Booster Screen Lock turns a USB flash drive into a key for your PC. After installing the program on your computer, just register a USB flash drive, which then locks and unlocks your computer.

Basically you just slap this lock on a USB stick and spin the numbers, and it’ll be a lot tougher for anyone to access your data without the correct combination.

For the paranoid parent, Griffin Technologies releases its new USB-based PC nanny, the $59 ControlKey PC lock.

This year is the year of fingerprints for security – if it weren't already abundantly clear, here's another bit of proof. This is the VeriMark Fingerprint Key by Kensington. This device is just ...

Using Predator, you can treat your flash drive like a key to your PC -- insert it, and your desktop unlocks. Remove it, and your screen goes dark and doesn't allow anyone to use it.

Mac: If you're worried that someone might be snooping around on your Mac, and a password doesn't feel like strong enough protection, USB Screen Lock i ...

Like its previous keys, Google says the USB-C key’s firmware is permanently sealed into a secure element hardware chip, making the key more resistant to physical attacks.