How to block all sites in android except one allowed?

Question

Android

The situation is as follows: for a pilot project in a grocery supermarket, an android tablet will be installed, the task of which will be to register customers in the loyalty program, enter the personal account already registered, and perform an information function (view what promotions are available in this store). But since Since there is no money for the pilot for new software, we decided to use the existing site that performs all these functions. But the problem is that the tablet with the site will be available to a large number of people (this is the point), so you need to limit the functionality of the tablet to only one site. In the ideal picture, a browser should be open on the tablet, in which only one site should load, and attempts to go to other sites should be blocked. Help me please,

Answer 1

Search for "kiosk android", there is a certain amount of software with different prices and with a trial.

Answer 2

IMHO, the most reliable is to place the site on a closed network that does not have Internet access and connect the tablet to this network.

Answer 3

A firewall won't work? Like https://www.regendus.com/best-firewall-apps-for-android