You are heresuspicious persons
According to campus policy, UCPD maintains control of access to all campus facilities, monitors the issuance of keys and administers alarm systems. It is important to understand, however, that the Berkeley campus is generally open to the public. Theft is the most common crime on the Berkeley campus. Over $100,000 worth of University property and equipment is stolen annually from the Berkeley campus. Wallet, purse, laptop and backpack theft make up a large percentage of personal property theft.
Emergency telephones can be identified by a blue light. Freestanding phone systems, in tall dark columns or yellow phone boxes, are topped with a blue light which remains lit at all times. The campus has installed telephone units on the main campus, outlying parking areas, and other off-campus locations. Most elevators are equipped with emergency telephones on the wall of the elevator cab.