Record or capture? Term::Readkey or Term::InKey will let you capture keystrokes. If you are looking to do stealth keylogging I will leave you on your own for that as most of the uses that spring to mind are illegal, immoral and quite possibly fattening.

What is it you want to actually do?

Details removed by request, even though by way of justification, keylogging in Perl it is essentially too CPU intensive to be practical, and really only of academic interest.

As pointed out to me a cynic might view your collated posts as how can I write worm/trojan code in Perl. If that *is* the question the answer is you don't, which may well be fortunate for all of us. You can do it in under 100 bytes of assembler or alternatively about a MB of VB ;-)