About Us A & B Mobile Locksmith is devoted to providing you with the most professional service while making an effort to provide the most reasonable price possible. In most cases we can tell you the total charges, before coming out. We are a mobile-only locksmith service company, providing on-site answers to your locking problems. We offer full service Residential, Commercial, Automotive, and Emergency Lockout Services. A & B Mobile Lock was established by owner Ted Kooistra in 1977. We service Jefferson, Winder, Commerce, Athens,Gainesville and surrounding areas in Jackson, Gwinnett, Hall,Banks, and Clark counties.