openphoto/frontend — comment on commit 0c5c6cdf3bce51897af474375ec56afa5b8910cb
File: src/configs/upgrade/db/mysql/mysql-schema-1.0.0.sql line 140
By jmathai:

Right now, `id` is the number 1. It's a static value. Perhaps we change this field to contain the owner's email address or hostname. We have access to these values at all times and it's guaranteed unique.

Email address: Pros are that it's not tied to the server. Solvable using CNAMEs.
Hostname: Pros are that it's not tied to the user's email address.