Uh... I'm just going to put all these; you can separate them or w/e if u want.

1. Make ejectCard() give whether it did anything.
2. Make a method to determine if there is anything in the reader
3. event for when a card gets inserted or removed
4. make block directional, so it can in any rotation
5. sneak+right click to insert card.
6. ^ alterative, sneak+right click to scan card, queueing an event that can be read.