March 21, 2017. The programmable lock is now functioning on the liquid nitrogen room (637). The door will be closed but the lock will be open from 8-5, M-F. Please close the door when you leave the room. After 5 PM every weekday the door will automatically lock and you will need ID card access. I am setting up the lock to open for students with unrestricted access to the electron microscopes. Liquid nitrogen users from MSE and other departments will need to be added to the database to have after hours access.