International Rescue's machinery is ahead of its time and could be used to cause harm if it falls into the wrong hands. Consequently, top secrecy is one of the organisation's main directives and measures must be taken to prevent any information about the Thunderbirds machines coming into the possession of anyone outside of International Rescue. If anyone takes photographs or videos of the equipment, the Automatic Camera Detector alerts the crew in time for them to intercept those trying to steal their secrets.