How do I test if keys were sent?

[Trancexually]

I'm looking to test if any 4 number keys were sent. Is there a way to tap into a 'keylogging' type feature, possibly send them to a txt file to be read later, etc. Anything would do and variety is nice

[friends]

_IsPressed can be found here => http://www.autoitscript.com/forum/index.php?showtopic=5760