Follow these steps to connect your iPad directly to the booth via the Ethernet cable. You only need to do the full setup once — after that, it's just plug in and go.
Plug the USB-C Ethernet adapter into your iPad, then connect it to the Pi with the Ethernet cable.
Open Safari on the iPad and go to:
http://promptphotobooth.local:8001
⚠️ Use Safari — Chrome and other browsers do not support camera access on iPad.
Safari will ask to download a configuration profile. Tap Allow.
Go to Settings → General → VPN & Device Management
Tap PromptPhotoBooth CA, then tap Install in the top-right corner. Enter your iPad passcode if prompted, then tap Install again to confirm.
Go to Settings → General → About → Certificate Trust Settings
Find PromptPhotoBooth CA and toggle it on. Tap Continue on the confirmation dialog.
Go back to Safari and open the booth:
https://promptphotobooth.local:8000
The app will load without any security warning. Allow camera access when prompted.
Plug in the Ethernet cable.
Open Safari and go to https://promptphotobooth.local:8000
You're ready. 🎉