> What is your workflow that this would be any more difficult? The first time you sign up for a service you almost always have to do this anyway for confirmatio

> What is your workflow that this would be any more difficult? The first time you sign up for a service you almost always have to do this anyway for confirmation. If you then select the "Remember me" path, your primary computer is whitelisted and you don't have to do the round-trip. This assumes one (or n) devices that belong to you. I typically have to log into multiple services using a large amount of computers for work. In my use case this would be tremendously annoying whereas two factor I can simply log in like normal and type in the code from my phone's app. > If you have two factor auth set up for your email account then you're already pretty well protected and having each and every service use a different two-factor method provides diminishing returns in security. I disagree; it prevents someone from getting into my email due to a vulnerability and then being able to get into every other service I'm connected to. Each service I use would, ideally, have two factor (though I obviously do not think two factor is perfect but it's better right now than most alternatives in my opinion).