One of the more problematic elements of building any application is managing end user identities. Writing the code to manage who gets to access any given application not only is time consuming; it doesn’t usually add much in the way of unique value to the application.
There are three standard ways to manage API authentication these days: API keys, OAuth tokens and JSON Web tokens (JWT). Adam Duvander over at the Zapier engineering blog explains how and when to use them. The humble API key is the common and earliest form of API authentication.
Standard methods for biometric authentication, think fingerprint scanning and facial recognition, are extremely problematic given the current cultural expectation that masks, and often gloves, be worn throughout the day. UnifyID has launched a new gait-based biometric authentication API to help.