KeyGrabber keylogger is an undetectable keylogger, used for recording keystrokes on PS/2 and USB keyboards. A hardware keylogger is a tiny electronic device capable of capturing keystrokes from a PS/2 or USB keyboard. A keylogger contains advanced electronic circuitry for monitoring a keyboard's USB or PS/2 connection, filtering keystroke data, and recording the data to internal memory. The built-in memory typically has several megabytes (or even gigabytes), meaning it can hold years-worth of typing.
A hardware keylogger is completely undetectable for software running on the computer, such as anti-virus programs and security scanners. A hardware keylogger also requires no software or drivers, meaning the installation process can be done in a matter of seconds. Just plug the keylogger » in-between the keyboard and the USB or PS/2 socket on the computer's rear side.