I say, “Live dangerously.” What is the point of having your camera is you never use it. Just carry it around your neck and take all the pictures you want. If you’re going to the famous tourist places in the daytime, they’ll be probably people and security guards around anyway. Just avoid taxis and you’ll be fine. I usually take the little buses. The subway is my second choice although it is crowded and has pickpockets. Hold your bag or camera around your neck in FRONT of you rather than behind you because the professional pickpockets will just cut your backpack open on the subway and you won’t even notice. (The “siteo” taxis from the airport are safe, I believe). If you absolutely have to take a taxi, you could try asking your hotel if they know a reliable driver personally although that might cost triple. Then, you could write down the license plate number and leave the license plate number in your room as a precaution but taxis could still be dangerous. I’d first ask a street taxi just to get an idea of the price and then use that price as a bargaining tool to haggle with a taxi driver that hopefully someone at your hotel knows. But do not take a taxi off the street no matter what.