Your browser will ask for camera permission. Your video is sent to this server for processing (not shared with other visitors) and is not stored — only the annotated frames are shown back to you.
One object per phrase: person. phone. Commas and
"and" work too. Each match gets its own tracked box, so two people show as
person x2.
Zone and line positions are fractions of the frame (0–1). hold is how long the condition must persist before it alerts — this is what stops a one-frame glitch becoming an alarm.