Create a seamless onboarding experience

Reduce friction in your registration and authentication flows and improve conversions throughout the user journey.

Create a seamless onboarding experience


Authenticate customers with 1-tap and no interruptions

Contrary to other products on the market, our APIs are built with optimal UX flows in mind and maximum user authentication flexibility.

SlashID provides passwordless authentication without redirecting users from your app and seamless WebAuthn adoption across devices.

Additionally, our risk-based authentication logic reduces fraud attempts and keeps Customer Acquisition Cost under control.

With just one tap, new users can register on your portal and they'll only be prompted for additional authentication if they perform higher-risk operations such as a payment.

Authenticate customers with 1-tap and no interruptions
  • Retain your users when it matters /

    Users drop-off when they face a frustrating sign-up or sign-in experience. Contrary to other legacy authentication solutions on the market, SlashID’s magic links don’t terminate the original user session resulting in optimal UX.

  • Boost conversions /

    Increase your conversion rates by adding a DirectID token to marketing emails and other multi-channel interactions so users are already authenticated when they land on your page and can complete call to actions with ease.

Authenticate customers with 1-tap and no interruptions
  • Risk-based critical user flows /

    SlashID's unique approach to authentication enables a flexible number of authentication factors per user. Prompt users for stronger or weaker factors depending on the criticality of their operation. For instance, you can use biometrics for payments and magic links for simple account creation.

  • No interruptions, lowest latency /

    Our architecture is entirely serverless and globally replicated across most cloud regions to handle traffic spikes and minimize latency.


Enable a frictionless user experience.

UX-optimized and flexible authentication methodologies compatible with any application flow.


Biometrics are a convenient, safe, and fast way to authenticate users into your application. Comply with PSD2 requirements without inconveniencing users and get rid of bots without using CAPTCHAs.

Adaptive, risk-based MFA

Contrary to the other vendors on the market, our unique technology allows for a flexible number of authentication factors ranging from magic links to biometrics without any opt-in required. You can perform MFA only for security-critical user flows, using one of the multiple factors available depending on the risk-profile of the user action.

Easy Import/Export of user data

Simple REST APIs to import and export user data and avoid vendor lock-in.

Make the most of your user base

Allow your users to connect to partner websites and services using your credentials.

DirectID tokens

Allow your users to resume any flow without needing to sign-in. SlashID’s unique technology allows you to send pre-authenticated links at scale and to embed 1-tap purchases in your marketing campaigns. Compatible with all your favorite Marketing Automation tools.


Single Sign On (SSO) allows your users to log through a third-party identity provider and provide you with all their information with just 1-click.


Get /id running in minutes

We provide all the tools your developers need to integrate with SlashID, including support, easy-to-read documentation, and sandbox environments for testing.

See docs
1// Register a new user via WebAuthn
2const user = await
3  AcmeID,
4  {
5    type: “phone_number”,
6    value: “+13337777777”,
7  },
8  {
9    method: “webauthn”,
10  }


11/11 ln

Use case

Learn about using /id for user onboarding

Discover how to make your users happy from their first click.