Which library should I choose to enter a pin code in an iPad application?

Question

iOS

It is worth choosing a library for entering a pin code.
Application for iPad. The pin-code check should take place on the rest server via http. Hence the requirement - asynchronous verification of the pin code. I also want ease of use (without extra crutches).
I looked at the THPinViewController library. Outwardly, I liked it, but it is impossible / not convenient to use asynchronous pin code verification in it. It is also not clear how to use for all application screens - write a base class? I would like the last screen to open after entering the pin code.

Answer 1

Actual!