Start with the camera you have
Rapid Cactus runs from a secure HTTPS page and requests camera permission only after you start. Keep the page open and the device awake while monitoring.
Adjust alerts to your scene
Set a reaction threshold. Enable sound and, where browser permission allows, notifications. Watch and Ignore zones focus measurement on useful parts of the image.
Keep useful evidence locally
When enabled, event saving groups motion into five-second local events with review frames. Export is always an explicit action.
Know the limitation
This is not background monitoring and does not run after the page closes or the device sleeps.