Fair enough, but I'm still waiting for an alternative that's as low-touch for non-techies. And I'll still take SMS over "send the code to some other device tha

Fair enough, but I'm still waiting for an alternative that's as low-touch for non-techies. And I'll still take SMS over "send the code to some other device that may or may not be within reach" which is one of the common alternatives. It's annoying enough at home, but if I'm on vacation or at the office, having codes sent to my iPad is a non-starter.