sylvia on Nostr: On this site: https://uselessshit.co/resources/nostr/ it says: Logging in with ...

On this site: https://uselessshit.co/resources/nostr/ it says: 


Logging in with someone else's key.
One of the cool features of Nostr is that you can log in with someone else's public key and see the world through their lens.


Does this just mean - knowing who this person follows? (Because are stored in the client?)