Hiding / Suppressing the Keyboard Permanently
Permanently hiding or suppressing the keyboard by installing an application like "Null Keyboard" is possible.
However, you should exercise extreme caution in doing so, as this will impact access to settings.
You can only use a PIN and not an alphanumeric password as Kiosk Browser only provides on-screen PIN entry in scenarios where the keyboard is not available.
On devices where fingerprint authentication is available, this can be used instead of a PIN. However this would not be a common occurrence in a Kiosk environment, and more likely when Kiosk Browser is being used in Standalone Mode.
Customer support service by UserEcho