The USB KeyShark from Thumbs Up is angled as either suitable for "monitoring appropriate use" or as an extra back-up tool, the KeyShark can be connected to a keyboard to record every single keystroke that is made.
The KeyShark plugs in between your keyboard and computer with the claim of being installed within seconds with all keystrokes - even special characters - intercepted and stored in its memory.
The KeyShark uses no system resources, just running discretely in the background and works with all PC operating systems with USB keyboards.
Data recorded is is retained even during system lock-ups and power outages and the claim is that it can store over a year's worth of data on 4MB internal memory.
The USB KeyShark is available now for £49.99 with a minimum order of six.