SPL is ideal for managing the health and safety of residents, particularly in high rise apartment blocks. Currently there is no real way of accounting for who is in and out of the building at any one time. This makes the task of the responding emergency services very difficult, as they must try to sweep the entire building to account for any people that may still be inside, which often puts them in unnecessary danger. Visitors to the apartments can be issued with resident’s visitor cards. The responding emergency services can have direct access to the SPL system for the apartment block, so that they have real-time information as to the occupancy of the building when they arrive.