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
<script src="https://js.cotter.app/lib/cotter.js"></script>
  var config = {
    ApiKeyID: "<API_KEY_ID>",
    Type: "PHONE", // EMAIL or PHONE
    OnSuccess: (payload) => {},
  new Cotter(config).showForm();

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.