COMMERCIAL & RESIDENTIAL LOCKSMITH SERVICES When it comes to the security of homes and businesses in the area, there is no company more dedicated to protecting you than Loc Doc. As a full-service locksmith in Greenville, NC, we offer fast and effective service at the best prices available. We serve the residential, commercial, and industrial community. Our technicians have the right equipment to perform any service that you may request, from reprogramming your car keys to installing commercial-grade lock systems. Take a look at our services below.