I'm guessing this is a bug. It asked me once (per device), and never asked again...

		Aissen on Feb 15, 2018 \| parent \| context \| favorite \| on: Facebook spamming users via their 2FA phone number... I'm guessing this is a bug. It asked me once (per device), and never asked again. Or I'm too trusting, and this is indeed a change in behavior for new customers.