Patent ID: 9538150
Date: 2017-01-03
CPC Classifications: G06K,G07C,H04L,H04N

Claim:
1. A monitoring system of a group of persons coming to an entrance of a building comprising: a camera system arranged to capture an image of the group of persons entering the entrance, the camera system including a first camera located at a first place of the building and a second camera located at a second place at which the group of persons can come by way of the first place; a recorder arranged to record the image captured by the camera system; a detector arranged to detect a number of persons captured by the first camera and to detect again a number of persons captured by the second camera wherein the detector is arranged to cause a caution if a change in the number of persons captured by the first camera and the second camera is detected; and an unlock system of the entrance to cause a caution if the change in the number of persons which have passed through the unlocked entrance is detected.