System and method to provide contextual services, the method including: capturing a characteristic of a first person inside or within a predetermined distance of a monitored space; accessing a database of identifying characteristics of potential visitors to the monitored space; identifying the first person by use of the database, to produce an identified visitor; and providing to a second person an information related to the identified visitor. The system may include: a database of identifying characteristics of potential visitors to a monitored space; a surveillance device configured to capture a characteristic of a first person inside or within a predetermined distance of the monitored space; a processor configured to identify the first person by use of the database, to produce an identified visitor; and a communication interface configured to provide to a second person an information related to the identified visitor.