Often public buildings require the installation of a more complex access systems or security systems such as biometric systems or key card based access etc.
If so, wait for mutual trust to develop before sharing.
You will be shocked to know how often individuals lock themselves out of their vehicle or houses and usually at odd hours too in the night.
This is maybe since they are worn out and stressed by the end of the day to be their usual alert selves.
Commercial locksmiths service is well known; they are the people who install digital and security systems in commercial industrial, office, car and anywhere else where you might need a lock.
Lock picking, lock bypass, impressions are also some of the other service provided.