This is the answer. The only advantage of passwords is that they’re cheap and universally compatible. PKI based solutions are more secure and more convenient. They cost a few dollars and there are too many standard, though.
Ultimately, I expect the biggest barrier to be mental. People have had mantra about passwords banged into their heads for decades that they have become synonymous with a secure system and people are suspicious when their device just lets them in with little to no friction.
Ultimately, I expect the biggest barrier to be mental. People have had mantra about passwords banged into their heads for decades that they have become synonymous with a secure system and people are suspicious when their device just lets them in with little to no friction.