Locksmiths are skilled tradespeople who install, repair, and maintain locks, keys, and other security devices. They provide a variety of services, including key cutting, lock rekeying, and emergency lockout assistance, and may also install and repair safes, security systems, and other hardware. Locksmiths typically have a high school diploma or GED, and may complete an apprenticeship or vocational training program to learn the skills and knowledge needed for the profession. They may also need to obtain a license or certification to practice, depending on the requirements of their state or local government.