As rapidly changing and diversified as any Modern Trade, your choice in a service professional will often depend on the device that needs service. An Auto lock specialist may service homes, but not Safes. Most Safe Service Techs do ONLY Safes.
Often built on emergency services, many modern 'smiths focus on the electronics of modern cars, the Chip key technology employed to reduce auto theft. But those skills don't always translate well into, say, digital access building entry device.
A professional association can often help with your search for the right fit, a modern and professional lock specialist who has experience with the category of your needs. LSA in South East Michigan will be happy to respond to your queries. ALOA, a national association, can put you in touch with many of this areas specialists.
SAVTA is an international association of SAFE Specialists/Technicians. They'll be more than happy to help you locate your best option.