How to keep the kiosk screen from going to sleep

When the kiosk page is open it asks the browser to keep the screen awake, and shows a small screen kept on note at the top while that's working. On most current tablets that's all you need.

When it might not hold

The browser feature it relies on isn't on every device. It can be missing or get overridden on older tablets (iPads before iOS 16.4, older Android browsers), when the device is in Low Power / Battery Saver mode, or if the kiosk gets pushed to the background by another app. If you don't see the screen kept on note, that's the sign it isn't active.

The sure fix: turn off the tablet's auto-lock

Setting the device's own screen timeout to never sleep works on every tablet, regardless of browser. Do this on any tablet you leave out as a kiosk:

• iPad: Settings → Display & Brightness → Auto-Lock → Never.
• Android: Settings → Display → Screen timeout → the longest option (some tablets offer Never).

Keep the tablet on power while it's acting as a kiosk, and turn off Low Power / Battery Saver mode so nothing dims or sleeps the screen mid-shift.