Hold Phone 1 like a pitcher: fluid fills the entire screen and spills off the physical bezel into the air. Phone 2 catches the stream directly into the cup.
Mobile browsers strictly require HTTPS to enable motion sensors. On your phones, open the HTTPS URL:
https://192.168.50.251:3443/pour
⚠️ When opening on iPhone or Android, tap "Advanced" → "Proceed" to accept the local Wi-Fi certificate.
http://localhost:3000/pour