A tiny device that can be hidden within a keyboard or a PS/2 plug and secretly record half a million user keystrokes has been launched by New Zealand hardware manufacturer, Working Technologies.
Unlike most surveillance technologies, 'Key Ghost' does not require any software to be covertly installed. All data is stored directly on the device and can be summoned by entering a "Personal Unlock Code" (PUC) through a keyboard. The device can then be removed and the information retrieved by another computer.
The most obvious application of this technology is to capture usernames and passwords or data that has been encrypted or otherwise protected on a machine. Working Technologies also markets the add-on as a handy data recovery tool.
Working Technologies says the FBI uses similar technology to carry out computer surveillance.
Key Ghost devices cost between $99 (£62) and $309 (£195).