Add Passwordless Login to my app/web
Quickly add passwordless login to any platform. We provide easy integrations for Web, iOS, and Android apps.
Get started for Free
One-Tap Passwordless Login for your Websites & Apps
Enable passwordless login on your website or app in just a few lines of code using magic links, OTP, device based authentication, and WebAuthn.
Authenticating
1 Million+ Requests
Every Month
Why Passwordless?
Increase Conversion
Removing passwords can increase conversion by 54%.
Boost Online Purchases
1/3 online purchases are abandoned due to forgotten passwords.
Improve Security
Data Breach costs $240K per 1K passwords breached.
Passwordless Sign In
Sign in faster with one-tap login for your websites and mobile apps.
🎩
Magic Link & One Time Password
Instantly login using a magic link or a verification code sent via email, SMS, or WhatsApp.
👆
Device Based Authentication
Authenticate users based on ownership of a device. Automatically log in from a trusted device or tap a prompt sent to your mobile app.
🧬
WebAuthn
Authenticate with FaceID and Fingerprint from your websites.
<script src="https://js.cotter.app/lib/cotter.js"></script>
<script>
var cotter = new Cotter(API_KEY_ID);
cotter.signInWithLink().showEmailForm();
</script>Easy to Build, Easy to Use.
Add Passwordless Login in just a few lines of code.
Read the DocumentationStart protecting your users.
Find out how Cotter provides a better and faster experience than passwords and 2FA apps using Magic Links, OTP, and Device Based Logins.
