It might work better now with the ubiquity of SMS, especially since the UI concept of "enter this code we just sent to your phone" is becoming increasingly comm

It might work better now with the ubiquity of SMS, especially since the UI concept of "enter this code we just sent to your phone" is becoming increasingly common. Basically, like 'stanleydrew says elsewhere in the thread (https://news.ycombinator.com/item?id=7139641 https://news.ycombinator.com/item?id=7139641), the idea is just to flip the default for products implementing a single factor.