U2F is great because it's a relatively cheap hardware dongle. I'd like people to be using the U2F devices that are also PKCS#11 devices, but the ones that also handle NFC for mobile use tend to get prohibitively expensive.
What I'd love to see is banks and similar hand these out to customers uninhibited, so that their customers get better security everywhere - but most importantly at their bank.
That would be amazing. After all, it's in their best interests not to have accounts compromised, as well.
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