Instead of relying on cameras or cloud models, it observes whatever signals exist in a space such as WiFi, radio waves across the spectrum, motion patterns, vibration, sound, or other sensory inputs ...
You can use http://127.0.0.1:5000 to access from your pc/laptop Or use http://192.168.0.128:5000 (this is my IP, replace with your) to access from your LAN device.
The above table shows the list of components I am using as of now; you can have a different set of thermal printers and Raspberry Pi versions. Also, my printer requires at least 6 Volts to operate.