Of course the list of prohibited items includes some obvious stuff: knives, guns, CS spray, explosives and stunning devices.
But there's also an Olympic list of prohibited tech devices.
On the Olympic list of banned tech devices: Walkie-talkies, phone jammers, radio scanners, laser pointers and strobe lights.
A first for any Olympic Games is the ban on personal or private wireless access points and 3G hubs, which are not allowed at London Olympics events and venues.
iPhones, iPads, and Android phones and tablets are permitted inside venues, but must not be used as wireless access points to connect multiple devices. No mention of BlackBerry phones or Windows phones is made by the Olympic police.
Non-commercial photography and video is permitted but on the banned list are large photographic and broadcast equipment over 30cm in length, including tripods and monopods.
Thankfully large flags and oversized hats, as well as golf-style umbrellas are also verboten.
This story, "Wi-Fi and 3G Hubs Banned From Olympics" was originally published by PC Advisor (UK).