MyBB Community Forums

Hi there,
I'm developing an external application (bash script) whish will call a misc page on a MyBB forum (wget or curl).
I'm looking for a way to identify user with a crypted identifier, but don't really know which solution is the best:

• Create a new field in mybb_users (automatically filled when the user asks the bash script for the first time)
  
• Hash the uid
  
• Hash the username
  
• Hash both
  
• ...
  

I don't want to use a field that the user can modify (as email or password).

Any idea or suggestion ?

I'd probably just has the ID, since that should never change. I'd probably use something like https://hashids.org/php/