How to make a Key Listener in unity

Hi all, I am wondering how to go about making a key listener. What I mean is:

the program prompts you to press any key (I have that), then you press any key on the keyboard, and it responds saying "you have pressed x" where x is the key you pressed.

I've tried using the input.anykey bool to then return the getkey command as a string... but that didn't work at all.

any help would be much appreciated

ps. this would be really useful in situations where the player needs to reassign his controls to better customize it for himself.