Fast - World's fastest login and checkout

Fast is the easiest way to securely login.
The Fast button can be easily added to any website for secure one-click login for all users.
Fast supports 100% of users, authenticating through email, and doesn’t require users to have a Fast account.
Login, Fast!

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Great experience! A serious game changer!
Thanks, glad you think the same!

authenticating through email, and doesn’t require users to have a Fast account.

Pros:

Fast button can be easily added to any website for secure one-click login for all users.

Cons:

No cons

Wordpress plugin in beta, who wants to test?
I want!
How can a user who signed up with emailA change their email to emailB in our app?
you need to give them that functionality in your app, then next time they login with the new email through Fast will be as normal 👌

This is a great idea. No way to logout of the Fast App session. This would only be an issue if an end-user is on a public computer and didn't know how to delete cookies.

Pros:

Great for faster login sessions.

Cons:

Not created for public computers/devices.

Hey if you got to fast.co > sessions you can kill a session from any device! :)
Looks great. Do you have a privacy policy?
People are more likely to add a password than verify their email. Some of the reasons why is because first -- accounts are known to have password so a user knows they will have to add a password. Another reason is verifying an email requires more time than setting a password. Also verifiying emails dont always block the user from using a product. This is why Facebook and Google sign ups are so powerful. But I like the concept.
Awesome UI and solves a huge world problem, your product will be as big Google, Facebook and Microsoft soon.
this is great, but I wonder if you have any thoughts about how something like this could work in native mobile apps instead of on a browser where you can easily track a user across multiple websites using cookies. I'd imagine it'd be much more difficult to get something like this functioning for native mobile applications.
I'm curious about your checkout product. Is it like Apple Pay where you are providing the merchant account as well, or are you passing all the card info to the merchants shop for them to use their already existing gateway?