I did this many time in college to, at the library that's 24hrs. It also helps if at least one upper level or grad mathy text is on the table lying open. That b

I did this many time in college to, at the library that's 24hrs. It also helps if at least one upper level or grad mathy text is on the table lying open. That being said: 1) for the 12+hr interval (eg heading off to sleep then do something, then return) I add one of those laptop lock cables 2) those cables are more for the psychology of "don't touch this" than for security (just like how people feel uncomfortable near unfamiliar math), as a cheap wire cutter will remove one in a short time