If you have static IP, simplest way would be to use the htaccess allow deny rules:
- Find your IP (let’s say its 1.1.1.1 for your tablet and
10.10.10.10 for your PC) -
Find the htaccess file in your WordPress installation (create one if
it doesn’t exist) and then add the following rule:<Files wp-login.php> order deny,allow Deny from all # whitelist tablet allow from 1.1.1.1 # whitelist PC allow from 10.10.10.10 </Files>
You can read more regarding the same here: wpbeginner