Locksmith business. Help people in their time of need -- when they're locked out. Business Overview Working as a locksmith on a mobile basis, from home, or from a retail storefront, you can offer customers a wide range of locksmithing services ranging from key cutting, installing new passage sets, emergency entries, sales of locks, safes, and related equipment and installation. In the United States there are more than 30,000 locksmiths, of which 50 percent are self-employed and...