Fung

Product Manager

Having an open relationship with code, design, and marketing

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Having an open relationship with code, design, and marketing

Posts by 

Fung

Engineering

Webhooks vs APIs: What's the Difference?

Most products today integrate with payment platforms, identity providers, messaging services, and analytics tools. Two communication models power the majority of these integrations: APIs and webhooks.

Fung
May 28, 2025
Engineering

How To Implement Passkeys with WebAuthn: Complete Developer Guide

A practical developer guide to passkey authentication and WebAuthn. Covers how passkeys work, registration and login flows, JavaScript code examples, best practices, and testing tips.

Fung
May 28, 2025
Industry

What Is FIDO2? Complete Guide to FIDO Authentication

FIDO2 is an open authentication standard that lets users sign in without passwords. This guide explains what FIDO2 is, how it works, how it compares to FIDO U2F, and how passkeys build on top of it.

Fung
May 28, 2025
Engineering

Passwordless Authentication: Magic Links vs Passkeys vs OTP

Passwords are one of the biggest security liabilities in modern software. Passwordless authentication replaces them with magic links, passkeys, and OTPs—methods that are faster, easier, and harder to compromise. This guide explains how each works, when to use them, and what to watch for during implementation.

Fung
May 28, 2025

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