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Passive Authentication

Quick definition  ⓘ
Why it matters: Because there are increasingly too many authentication steps; because of the need to authenticate without user awareness or action.
23.65Percent
Estimated compound annual growth rate (CAGR) for the passive authentication market from 2018-2028.https://www.mordorintelligence.com/industry-reports/passive-authentication-market

Key Points

  • These solutions authenticate users without requiring user input or specific steps carried out by the user
  • They generally operate in the background, and in some cases can operate continuously (i.e. at all times)
  • Behavioral biometrics and facial recognition using a laptop webcam are common examples of passive authentication
  • Passive authentication is one solution to the ever-growing problem of too many authentications per day or per workflow
© Sorapop Udomsri / Dreamstime

The sheer number of authentications required of users today can lead to frustration and loss of productivity. Passive authentication is meant to solve this.

Quick Read

As technology—and especially the cloud—become more and more a way of life, authentication has come to take up more and more of the average person's time. This is true both in the lives of employees and in peoples' private lives after hours.

Sometimes it seems as though getting anything done is an endless set of authentication steps, so that it takes minutes or even hours to get started on nearly any task as you try to complete all of the authentications needed to start all of the software needed to begin.

Passive authentication is one possible answer to this problem.

The goal of passive authentication is to find a way to confirm identity—and thus a way to ensure secure computing—that doesn't require the user to take any particular concrete steps. Examples of passive authentication include technologies like behavioral biometrics and some forms of camera-based face identification (for example, when positioned above a laptop screen).

These technologies can simply "look at" the user and decide whether or not they should be authenticated—without the user having to stop and type things in, look things up, place a finger somewhere, provide a code, or do anything else that takes time. Instead, authentication happens (for the user) in a "passive" way.

Because it takes time to do all of these things, passive authentication is generally a way to accelerate all of the authentication steps that a user would otherwise have to perform, reducing the total time they dedicate to authentication from minutes or hours down to seconds, and also a way to eliminate friction that might ultimately negatively affect a user's work, or perceptions of the software, or that might even cause them to give up on beginning a task at all.

Further Reading

—Aron Hsiao

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What Plurilock Offers
Real-time Identity Confirmation and SIEM Enrichment with Behavioral Biometrics
SSO, CASB, and DLP with Real-Time Passive Authentication

More to Know

© Deepak Karuppannan Raja / Dreamstime

Too Much Authentication

Most users and employees would agree that there's too much authentication in the world today. There's so much authentication that sometimes it feels difficult to get any work done.

© Gajus / Dreamstime

No Interruptions

Passive authentication enables systems and software to identify users as users go about their business, without users having to perform "authentication steps."

© Chepko / Dreamstime

Continuous Capable

Many forms of passive authentication are also forms of continuous authentication, since authentication that can be done without requiring anything of the user can in theory be done over and over again every few seconds.

Quick Definition

Passive Authentication is a form of authentication in which the identity of the user is checked and confirmed without requiring specific additional actions for the purpose of authentication. Instead, the user's activity, properties, or other observable data are gathered and analyzed for evidence of identity without additional intervention from, or work by, the user. Passive Authentication is, in essence, frictionless.

The invisible MFA technology in Plurilock ADAPT is a form of passive authentication, added to existing login prompts, that adds multiple additional identity verification factors without requiring additional steps from the user. Instead, identity signals are gathered as they perform the usual entry of their username and password, enabling much stronger identity confirmation without addition work from the user.