A lock on a car or home is prone to someone forgetting the key to open it. This is where a locksmith in santa ana ca comes in handy. Larger cities have more people and with more people, there are certainly going to be more cases of people needing someone to let them back in the thing they locked themselves out of. The most common thing is the car. Locksmiths can come to the exact location you are at and open your car door for you. It is a good idea to let the locksmith make an extra key in case you need it again. They will also come to your home and open your door for you if you lock yourself out.