Minecraft Bedrock Auth Servers, page 9

Auth servers allow users to create an account with password with a plugin. That blocks faked usernames and using admin accounts.

A must-be in due to the lack of online username authentication.

The most popular Auth plugin is SimpleAuth : http://forums.pocketmine.net/plugins/simpleauth.4/

Rank Server Players Status Tags
1885
CraftYupSMP
0 / 2022 Adventure Auth Cross-Play Survival Xbox Account
1897
Bukan SMP
0 / 200 Adventure Auth Economy PvE PvP Raiding Survival Vanilla
1902
0 / 999 Adventure Auth Creative Lobby PvP Survival Xbox Account
1907
0 / 50 Adventure Auth Economy Guns Lobby PvP Survival