A couple of weeks ago I saw 2 men on a red motobike pull up outside Fuckcoffee, where the outside tables were full of people using laptops. One jumped off the bike, grabbed a girl's laptop and they drove off with it - no-one could run fast enough to catch them. Police and ambulance arrived soon afterwards. I was told by a shop owner they'd stolen 6 laptops and 4 mobiles that week alone!
If you're sitting outside using laptops or phones BEWARE. The staff defnitely aren't warning customers - an hour later there were 2 new people sitting outside with laptops so I warned them myself and they looked surprised!