I have noticed that the people who tell me they have been pick pocketed are generally the people I would target if I was pickpocketing. Old wealthy couples who don't speak the local language and have lots of expensive stuff with them, young people with flash cameras and computers hung over a shoulder (not across chest or around neck). Combined with a generally touristy attitude (noisy, visiting tourist sights, obvious cameras, maps, backpacks). We also noticed in Italy, France, Chile and Peru (have been other places, but didn't encounter pickpocketing) that the majority of those targeted were US American. This was out of proportion to their numbers. We kind of exploited this and stayed near loud groups of obviously wealthy Americans so that we would be less likely to have issues, and found a few others doing the same (Australian and New Zealand travelers both times, antipodeans seem to think a similar way).