Sign in to My Account.
Enter the email from your purchase. We send a one-time link that brings you back here to confirm this device. No password required.
Give this device access?
The email link proves access to the account. Confirm to sign this device in. Your other devices keep their access.
Each device has its own sign-in. You can sign out here or deliberately sign out other devices from My Account. An older unused sign-in link will not work after a newer one is issued.