Which of the following are suitable for the QR code provisioning method?

QR code provisioning is ideal for remote device distribution because it doesn't require a "programmer device" (a device pre-configured with the enrollment details) to be physically present with the end-user. The user simply scans a QR code to enroll the device. It's also a suitable method for devices lacking NFC capabilities, as NFC is an alternative provisioning method. The QR code method provides a straightforward way to enroll devices without relying on physical proximity or specific hardware features like NFC. Logging in with a Gmail account is a user-level action and not directly related to the device provisioning method itself; it happens after the device is enrolled and configured, making that option incorrect.