Hi @Gratus-BenchSci,
Thanks for reaching out to the Auth0 Community!
Yes, Auth0 saves the cookies on the user’s browser. On your Auth0 Dashboard, there should be a Login Session Management setting to adjust your session settings.
Have you taken a look at our Passwordless documentation? It goes into more details about the Passwordless implementation.
Please let me know if you have any further questions.
Thank you.