> Mandating that every one of your customers has a Yubikey is somewhat trickier to do in practice, and a nightmare to manage the logistics around lost keys. Ma

> Mandating that every one of your customers has a Yubikey is somewhat trickier to do in practice, and a nightmare to manage the logistics around lost keys. Mandating that everyone that has access to your admin console has a U2F key, on the other hand, seems like a perfectly reasonable expectation for a company of Twitter's stature.