And yet bizarrely, the number of organisations with serious security requirements that are adopting SMS messages or other methods dependent on phone numbers as

And yet bizarrely, the number of organisations with serious security requirements that are adopting SMS messages or other methods dependent on phone numbers as 2FA just recently is quite noticeable. Stripe use it for logging into your business's account. HMRC (the UK government tax office) also uses it for logging in. Various banks and financial services I use in a personal capacity rely on secondary phone authentication to set up things like new recipients for paying bills online.