USB Raptor - Lock and unlock your computer using USB flash drives as keys.
KeyTouch - Lock & unlock your Mac via TouchID on your phone
VSUsbLogon - Free software for Windows, Encryption Software for Windows, Video Downloaders, Login to Windows via USB device, Logon Screen Customization
Near Lock - A new way to lock your Mac. Just walk away.
Knock - Sell your home in 6 weeks or less
KeyLock - KeyLock is a program to lock your computer with a USB Flash Drive.