Quetions about Andrid and Linux

[Areej25]

Ihave project about doing password for Android device + add security quetion

user tries to enter 3 times password , if he can not enter the right password after 3 times , there is security quetion .If also, he can not give the right answer , the device reset . My quetions are


Q1 : Which programs do I need to downlod Android?

Q2 : Do I need Linux ?

Q3: Can u give me free sources to downlod these programs?

Q4: Can u give me open sorce for Android which has password code ?

Q5: Determine password code in open source?

Q 6: Where does password store to do crack?

Thanks