Please start a campaign similar to this: http://i.imgur.com/fCGaaur.jpg
Particularly during exam period, I dozens of laptops unattended. It also baffles me when students ask complete strangers to watch their stuff. It’s unpleasant to lose a valuable. Maybe this would help.
Thank you very much for this reminder. The Libraries do have signs that warn students not to leave their belongings unattended. However it is always a good idea to be safe. The University’s Security Department has a useful Tips page here.