Why do you ask for an email address?

We needed a way to show the right data (purchases history, active orders, etc.) to the right user.

There were mainly 2 ways to achieve that:

1. Store in our database a combination of user's IBAN and bitcoin addresses to use as unique keys
2. Let users create an account using an email address

We opted for the second option for the following reasons:

• It's pretty easy to have a throwaway email address (Tutanota, ProtonMail etc...) to use exclusively for Pocket
• Not using Bitcoin addresses to uniquely identify users enables the app to support multiple Bitcoin wallets

The sign-in process is pretty straightforward and quick. We use a magiclink system which sends a link to your email. Just click on it to sign into the app. No need to remember any password.