Smart Key San Diego CA At MRM Locksmith, we are a thriving business that has offered friendly and reliable service for years. We guarantee an expert tech every time you call, whether you need our services or simply have a question that needs an answer. At MRM Locksmith, our number one priority is getting our customers back to enjoying their day as quickly as possible. And we are proud of the fact that over 99% of our customers have agreed that they will use our services in the future if they are ever in need of a Lock Smith Company in San Diego, California again or have questions about our security services.