Security lighting is used indoors as well as part of a home automation system. Lighting for security or safety does not imply bright lighting. Effective security lighting allows building occupants to see the faces of visitors at the front door, allows police officers to see inside a store from the outside, and provides sufficient illumination to deter potential criminals. Emergency lighting is used to illuminate spaces and guide people during emergencies.

Effective lighting should be an important part of any security strategy. Lighting cannot prevent disasters or attacks or guarantee human safety if such events occur. Used wisely, however, lighting is a valuable tool that can increase security and safety. Used unwisely, it can waste precious resources and actually detract from these goals.