User interaction sequence

The system shall have (at least) three states:

• Closed: Only select members can open the door
• Open for members: All members can open the door
• Open for public: Door is automatically opened with front button

flowchart LR
  press(Press button) --> open_for_public{Open for public?}
  open_for_public --"no"--> reading(Read card)
  open_for_public --"yes"--> open(Open door)
  reading --"authenticate"--> member{is member?}
  member --"no"--> do_nothing(Do nothing)
  member --"yes"--> open_for_members{Open for members?}
  open_for_members --"no"--> authorized{Authorized?}
  open_for_members --"yes"-->open
  authorized --"no"-->do_nothing
  authorized --"yes"-->open