Theft does occur in the cities. A simple method to avoid pickpockets is to store money and important documents close to your body, ideally in a money belt. Have some pocket money ready, so you do not have to search for it in the middle of the street. Pay good attention to your possessions and to what is going on around you. Robberies tend to take place in the places you should avoid, such as dark alleys and dark deserted beaches.
Stay away from people offering drugs and do not go along with ‘plain-clothes policemen’ who don’t show proper identification. Your belongings will be reasonably safe in your hotel room, but do not leave valuables behind. If you use your common sense and stay alert, you shouldn’t have any problems.