Input.inputString on iOS - Empty?

Hi there,

I've been messing around with Unity for a mobile game, and I have need to capture individual keystrokes from the user on either a physical keyboard (Android) or touchscreen keyboard (iOS/Android). I've managed to capture input, including backspaces on Android (and desktop) by reading Input.inputString.

However, on iOS, it seems that Input.inputString is not being populated. The only way I've been able to read input from the keyboard has been from TouchScreenKeyboard.text. This isn't ideal, as I don't get individual keystrokes, but instead, get the entire string that has been typed for that instance of the keyboard at all times.

Should Input.inputString be populated on iOS (i.e. is this a bug?), or is there another way for me to capture individual keystrokes? Please keep in mind there are input methods (Chinese, for example) which takes a few latin characters to type, after which gets replaced by a chinese character (pin yin input).

The reason I need to be able to act on each individual key (or character submitted) is that I need to do processing on each character submitted and decide on whether to "do something" or not. I don't need them to press ENTER.

Any ideas/feedback appreciated. Thanks!