Template:UberId / UberName / DisplayName

Display names can be easily changed and are not a reliable way to identify users.

UberIds are unique long numbers you can store as strings to identify users without personally identifiable information.

UberNames were replaced by uberIds and are only used now for linked forums names. Steam users will have an auto generated uberName like steam000000000000000.

Ubernames cannot be changed except when linking a forum account with steam.

Create your own unique identifier and save in user settings if you need to validate user identity over time.