Having a Facial Recognition device (FACE recorders), you could search for a specific image of a person.
In order to know what points of the building has the person passed through, we can select each channel, or we can select all and export the information; then, we will see on the .XLS file that is downloaded which are the cameras that have seen the person and when.
Find attached a sample export file.
We can perform three types of search:
Here's a brief explanation of the three types of search:
Type of Event: Successful or failed comparison (depending on whether the person is in the face library or not) or by a stranger (to generate alarms for people not in the libraries - this only works if the recorder was working in the homonymous stranger mode)
Picture: From an image that we upload to the computer
Person Name: If we want to search by a person's name.