The security guard working on the night of Monday 12/9 was quite rude. I went outside briefly to make a phone call and buy a drink from the vending machine, and he clearly saw me walk outside, as he was standing by the doorway eyeing people off like a hawk as they came in. When I came back inside just 2 minutes later he asked me for ID, even though he knew I had just left the library (he had seen me). I explained that my ID was up in my bag at my computer, but he made a big deal of it and made me go upstairs, retrieve it and show it to him, without so much as a "please". I felt like an idiot and talked down to. I realise that showing ID after 8pm is a requirement of entry to the library, but perhaps it can be done with a little common sense - I had left the library barely two minutes before, and he had seen me do so. And if no common sense can be applied, perhaps some basic courtesy would not go astray, at the very least.