Light is required to both capture and create a photographic image and is also necessary to view it. Unfortunately, the ultra violet part of light can also cause images to fade. LightControl is a simple device, developed with the support of AXA ART, which can help to determine whether collections are being exposed to too much light. If our advice is followed, photographs can theoretically be displayed safely at least a century. LightControl does not prevent damage from light; it is simply a warning system to alert when lighting conditions could result in noticeable damage.