Sentinel Borderforce is a combination of ANPR cameras with a central database and is designed for the free-flow checking of high volumes of passing vehicles and to pre-select candidates for further examination.
Cameras above the motorway recognise the licence plate and country of origin of all passing vehicles and the system can be used for both surveillance and to collect anonymous data for traffic profiles.
When observing vehicles it can be used to select those to be stopped and examined on the basis of analysis and to respond to alerts when there has been a public order breach. As such it is said to help combat illegal immigration, prevent and discourage illegal borders crossings and help combat cross-border and migration-related crime.