So step one is wait for a power outage or for a breach to happen.
1) Locate key pad
2) Shoot keypad 3-8 times
3) take keycard out
4) Use keycard
5) (optional) repeat if needed
1) Locate key pad
2) Shoot keypad 3-8 times
3) take keycard out
4) Use keycard
5) (optional) repeat if needed