If you already have a My Kaspersky account, you can sign in to Kaspersky Security Cloud by scanning your personal QR code. In this case, your account data will be automatically transferred to the new device.
To get the QR code,
open Kaspersky Security Cloud for Windows and go to the Protection for all devices section.
The QR code is created by My Kaspersky services and includes important parameters for your authentication. Do not send your QR code to anyone, because it may result in data leakage.