Check first PIN in "choose" status

[KristianGoshi]

I wanted to do some custome checks when the users enters a new PIN (when the status is "choose"). The way I do it is by using a function at the storePin function (or endProcessFunction). But this is a bit a long way because the user has to type the new PIN twice before i can do my checks, so i was wondering if there was an option where i can check the PIN the first time it is entered (before the confirmation).