PIN Memo (com.pesegato.pinmemo) on Google Play
Remember all your numerical PINs with a simple 2-digit number! Faster than inserting a master password. Includes secure online backup of your pins with your google account!Each PINs inserted by the user are saved in a file together with other 99 false PIN. There is no way to recover the correct PIN in case the user forgets the "secret position" of the slider (which identifies the correct PIN).