Yep!! it’s also quite easy to make..!
check out this website:
http://www.makezine.com/blog/archive/2006/02/diy_hardware_keylogger.html

BTW, If you are interested in such things.. and want to buy on-the-shelf products.. visit the websites below :twisted: :
– http://www.lakeshoretechnology.com/KeyPhantom.asp
– http://www.keykatcher.com  
– http://www.keytrapper.com
– http://www.spectorsoft.com/index.html?UK=true
– http://www.keyghost.com/kgpro.htm

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