This EMC certified stereo camera head consists of three embedded image sensors with an integrated Ethernet hub and is powered over Ethernet. 3D depth calculation software is available. The design can be used for various security-relevant surveillance applications such as tailgating or piggybacking. Three cameras with appropriate baselines work together for exact depth image calculation over a wide range of distances. The design, the baselines, the sensor resolutions and types can all be adapted for special applications such as person counting, queue-length detection, and more.