If you are a man going to Paris do not keep your wallet in a pants pocket. The 12 year old girl thieves will observe you putting it in a pocket and will cell phone their younger sister who will deftly remove it. Keep everything in a fanny pack at the front of your belly. Or zipped in a coat. I have been to cities all around the world and the Paris subway thieves are the worst. They won't confront you or use violence. But if you slip and use a pocket it will be all gone in a split second. Be forewarned.