Auto-login in Amazon app right after installation

Thepacman

Hi all,
I'm currently setting up my new Pixel 8 pro.
After installing the Amazon app and opening it I was greeted with my name and already logged into my account. How can this be?
This is the first install of the app on a fresh GrapheneOS installation.

rustybird

Do you have other apps by Amazon (e.g. Kindle) installed in the same profile? If yes, see https://discuss.grapheneos.org/d/3470-automatic-login-to-amazon-shopping-app/10

Thepacman

rustybird Yes, the Kindle app was already installed before. I didn't expect apps to be able to communicate with each other, even when from the same vendor.
Anyway, thanks for pointing me to the thread.