Certain features of scite require a special sign-in to access features that go beyond the ones you can otherwise access using the link in the "Access" page of this guide.

From scite:
"We don't have a specific help doc about the benefits of signing up in particular - however signing up will allow you to use features that require an email.
These are:
- Reference Checks
- Save Searches
- Dashboards
- Notifications
The reason for those is because all of those features require an account to store them or an email to notify."