Turn Currently Held Button Into A String(C#)

I Have Recently Started Working On Custom Input, And Am Stumped At The Beginning - How To Let The Player Change Input In Game. I Have Thought About How It Could Be Done, And This Is My Idea. To Convert The Currently Held Button To A String. Im Not Sure How This Could Be Achieved, Which Is Why Im Here. So If Anybody Knows, Or Has Any Thoughts I Would Be Glad To Help. Thanks!

-Seth

Two ways I can think of are to use GUI events and use Input.inputString. Input.inputString contains any characters typed during the last frame.

#pragma strict
 
function Update () {
	if (Input.inputString.Length > 0) {
		Debug.Log("Update: "+Input.inputString[0]);
	}
}

function OnGUI() {
	var e = Event.current;
	if (e.type == EventType.KeyDown  && e.character != 0) {
		Debug.Log("GUI: "+e.character);
	}
}