Record every keystroke
This is an oldie but a goodie! Capable of storing up to half a million characters, the Key Shark can record the average computer user’s activities for up to a few months (Unlike a few days worth on old keys) before reaching its full capacity. Since it is not software-based, the chances of a computer user finding out about it is pretty slim, unless the users physically inspects the computer before they use it.
Wonder if they will ever have a USB version?


http://www.keyghost.com/USB-Keylogger.htm#plug
Try installing that on my Wireless Apple Keyboard. =)
Would I need to? I mean Bluetooth isn’t exactly know for it’s security.