On iOS/iPadOS, the Guided Access feature allows you to lock the device to a single app. Several apps can display a URL in "signage mode," though many come at a cost. However, there is an affordable alternative, priced at less than €1, that has been tested and works well for this purpose. While it has some limitations compared to more expensive options, it may still meet your needs.
More information about the application can be found on this URL, and the application can be installed from the apple play store. https://apps.apple.com/se/app/kiosk-fullscreen-browser/id1544947623?l=en-GB
Kiosk Full Screen Browser
After you have downloaded the app, follow these steps:
1. Go to Settings on your iPad.
2. Go to Apps (if Ipad is older you will find Kiosk app directly in the left column).
3. Locate the Kiosk app and tap it to access its kiosk settings.
4. Under Site enter the complete URL to the visitor screen including https://
5. Enable Limit to this site only.
6. Enable Hide status bar.
7. Disable Use top edge.
8. Disable Use bottom edge
9. Disable Allow inline playback.
Now, if you launch the Kiosk app, it will take you directly to the visitor screen and will only show that URL. But we also wants to lock the Ipad down. To do so we will need to enable Guided Access on the Ipad.
Guided Access
Guided access will lock the iPad down so that you will only be able to run a specific app, and to be able to exit you need to enter a code which you decide.
1. Go to Settings on your iPad.
2. Go to Accessibility.
3. Scroll down to General and there you will find Guided Access.
4. Enable Guided Access.
5. Under Passcode Settings you can set which passcode that will be used for accessing and exiting guided access.
6. Time Limits you can ignore.
7. Display Auto-Lock should be set to Never.
Once Guided Access is enabled, open up the Kiosk app to show the visitor screen in full screen. Depending on which model of iPad you use, press 3 times on the Home-button or press 3 times on the power button, to access Guided Access.
1. Tap Start in the top right corner.
2. Enter or set Passcode.
3. IPad is now locked in Guided Access mode running the visitor screen via Kiosk app
4. To exit Guided Access mode, press Home 3-times or power button 3 times (depending on iPad model)
5. Enter Passcode to exit.