@ec36a502 Some directed infraread detectors I assume. I CBA asking anymore.
@ec36a502 Long story short, pub landlady is on holiday and the staff had to break a window to get in today to open up as the main door lock malfunctioned. They don't know that I can find easier ways to get in and I don't want them to know that I do. The main doors have eurolocks and deadbolts. There's a back door, behind a locked and easily climbed gate that only has a eurolock. Could have popped that fucker in minutes.