Interesting and innovative approaches explored to protect the security of the individual.. my guess would be a hybrid solution taking the best of both.
As we are frequently reminded, our current methods of authentication are woefully flawed. Our reliance on passwords leaves us open to all sorts of risks. We choose them badly, we're not good at remembering them, we reuse them across different sites. Companies struggle with appropriate policies internally, and websites, even major brands, don't enforce strong rules either. Passwords are regularly leaked in data breaches and need to be reset, with sloppy approaches to alerting people putting them further at risk. Even where two-factor authentication provides an extra layer of security, it is often shunned as too fiddly and time-consuming.