I’ve noticed that several Google Apps Script users are looking for a secure way to restrict access to their Web App. In my case I am looking for a way to let everyone have access to some functions of the web app, while a control panel must be reserved for the administrator (me).
I wanted to share my approach that makes use of the novelty introduced in GAS on March 15, 2021.
Interesting thread in the Google Apps Script Google Group community discussing approaches to creating Web Apps with admin interfaces. Follow the source link for more information and the full discussion.