Using your common sense will help you to avoid Prague´s only real epidemic: pickpockets. Always remember to keep your bag in sight and avoid carrying your passport, wallet and valuables in your back pocket or an open bag. Thieves tend to operate around the city´s crowded sights, such as the Charles Bridge and on tram lines (mainly numbers 9, 22, 23). The organised groups use many tactics: one knocking into you while the other steals your belongings, being in your way while entering a tram while the other pushes you in and steals your wallet. Be aware that people who lean over to look at your menu may be more interested in your wallet. In a restaurant: never leave your handbag or coat containing a wallet unguarded on a chair next to you or hanging over the back of your chair. It is unlikely that anything stolen will ever be recovered.