TP-Link Tapo C320WS2K User Manual page 19

Line-Crossing Detection
Add one or more lines that should not be crossed, then if the set line is
crossed, the camera will send you notifications or even sound an alarm.
You can also set the crossing direction and detection schedule. It is ideal
for fence detection, property monitoring, and parking areas.
Area Intrusion Detection
Add one or more activity zones, then when the camera detects someone
enters the set zones, the camera will send you notifications or even
sound an alarm. You can set the detection schedule as needed.
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