For evening visitors to ISTB2:

o The door to module 219 in ISTB2 is automatically locked 
  after 5 PM. Please knock. We will open the door for you.

o For those coming from work: Tyler Street Parking Structure 
  (across McAllister Ave from ISTB2) is free after 4 PM.
  Map here

o ISTB2 has elevators at both ends of the building.