@GoogleForWork tweeted this article about using fingerprint readers and phones to eliminate passwords on the web. This seems very plausible that we could see this become mainstream quickly, if Google were to acknowledge it by adoption. Especially would gain traction if Apple were to also return to the consortium mentioned.
When you do your next math curriculum and decide to add more authentic, real world problem solving and interactive activities, check out this resource prepared by the NCMT. Supplement that Saxon with ideas and experiences from this great resource.