Have you used Plex before? No they don't need to know anything. They sign up and you grant them access (or even just give them a user in your home and they just sign in by texting you a code). It is as easy or easier than signing into your typical streaming app. Just extremely easy. Jellyfin is great and I hope they keep going but they're not at the same level as Plex. I've been using Plex for nearly a decade now and I've tried out jellyfin a few times. I'll keep trying because I don't want to use Plex forever but I'm not going to pretend they're the same. Hopefully they will be eventually.