Better Login experience at Checkout

When checking out, there should be an option: #1 Login with magin link or input password #2 once the client is logged in, then the name and country should already be filled in automatically At the moment, whenever a customer is returning, he has to type the email, the password (which has no validation at the moment), the name and the country all over again. It would be a lot easier if he could log in to avoid having to fill these steps again and again