Why Passwordless?
Increase Conversion
Increase Conversion
Removing passwords can increase conversion by 54%.
Boost Online Purchases
Boost Online Purchases
1/3 online purchases are abandoned due to forgotten passwords.
Improve Security
Improve Security
Data Breach costs $240K per 1K passwords breached.
Passwordless Sign In

Passwordless Sign In

One-tap login for your mobile/web apps secured by asymmetric cryptography based on the FIDO protocol.

🚀
No OTP, Magic Links, or Authenticator Apps

Approve logins directly from your app.

Learn more about Sign In with Device
ios.png
android.png
react.png
js.png
<script src="https://js.cotter.app/lib/cotter.js"></script>
<script>
  var config = {
    ApiKeyID: "<API_KEY_ID>",
    Type: "PHONE", // EMAIL or PHONE
    OnSuccess: (payload) => {},
  };
  new Cotter(config).showForm();
</script>

Built by Developers, for Developers.

Add Passwordless Login in just a few lines of code.

Read the Documentation

Start protecting your users.

 Why Cotter?

Find out how Cotter provides a better and faster experience than passwords, OTP, magic-links, or 2FA apps.

Ready to get started?

Create a free account and start integrating in just a few minutes.