I took these photos of the two major bike cages on the main campus around 9am one morning. These bike cages can be made accessible to any campus employee who shows up at the subterranean parking garage office during the random hours they are open. They re-magnetize your campus ID to allow entry and give you a parking sticker. This is free, but it took me almost a month to get there during a time they were actually open. I assume that it’s not much easier for other people.
All of this actually does not seem to be much of a deterrent. The bike cages nearly always look like this, unless it is later in the day, when there are even more bikes. They thin out a little late at night, but a medical center is open 24 hours a day, so there are always bicycles there. The cages are regularly inspected by campus security, and bikes left longer than a few days with a campus sticker result in a call to the owner; bikes without a sticker get confiscated in the short term, and sold after a year unclaimed. This is not long-term bike storage.
Outside the main cages is overflow parking. The bike cages are monitored by parking attendants and by remote cameras. There is never enough bike parking.