To Login to InTouchApp extension via QR code, please follow the below steps:
Note: Before proceeding, you need to have InTouchApp Contacts app installed on your mobile and Logged in.
Step 1 - Click on InTouchApp Extension located on the top right corner of the address (URL) bar.
Step 2 - Open InTouchApp on your phone, click on the red plus + button > Select Scan QR code.
Step 3 - Point your phone to the QR code on the screen, it would scan automatically and you will be logged in to the extension.
Alternatively, you can also Login via mobile number, have a look at this guide: https://intouchapp.freshdesk.com/a/solutions/articles/19000093730