PowerBI Report Embed - Auto Refresh Access Token

Hello Community, 

I have been embedding PowerBI reports as per this article - https://learn.microsoft.com/en-us/power-bi/collaborate-share/service-embed-secure (taking Embed URL from app.powerbi.com). 

With this approach, when user signs-in, the session expires after 60 mins or so and users are required to sign-in again. 

Is it possible to automatically refresh the token so that user don't see sign-in page. How can I achieve this?