Pickpockets may be found in any crowded place around the world. However, Barcelona and Rome were recently singled out as being particularly dangerous pickpocket havens.[3][4] Thieves have been known to operate in high traffic areas such as mass transit stations, even boarding subway trains so they can use the distractions of crowds and sudden stop-and-go movements from the train to steal from others. As soon as the thieves have what they want, they simply get off at the next stop leaving the victim unable to figure out who robbed them and when.