Two-factor authentication adds a second layer of protection beyond your password, so a stolen or guessed password alone isn't enough to get into an account. It typically combines something you know (a password) with something you have (a code-generating app) or something you are (a fingerprint or face scan). Setting it up usually takes a few minutes per account and is one of the highest-impact security steps available to individuals and small businesses alike.
Why Two-Factor Authentication Matters
Data breaches remain expensive and increasingly common. The global average cost of a data breach was $4.44 million in 2025, and in the U.S. specifically, that figure climbed to a record $10.22 million, according to IBM's Cost of a Data Breach Report. Human error and compromised credentials remain a leading factor in breaches industry-wide, which is exactly the risk 2FA is designed to reduce: even when a password leaks, a second factor stops most attackers cold.
How Two-Factor Authentication Works
Authentication generally relies on three possible factors: something you know (a password or PIN), something you have (a smartphone or hardware key), and something you are (a fingerprint, face, or retinal scan). Two-factor authentication combines any two of these. Because the second factor is either constantly changing (a time-based code) or physically tied to you (biometrics), a hacker who steals your password still can't get in without also having your phone or your fingerprint.
Authenticator Apps: The Simplest Way to Get Started
For most people, an authenticator app is the easiest way to add 2FA without any specialized setup.
- Google Authenticator® is a free app for Android and iOS. After enabling 2FA on an account, you scan a QR code the service provides, and the app generates a new code every 30 seconds to use as your second factor.
- Microsoft Authenticator® works similarly and supports Android and iOS.
- Other free options, like Authy, sync your codes across multiple devices so you're not stuck re-scanning a QR code every time you get a new phone.
For a small business, requiring employees to use one of these free apps is often enough to close off one of the most common paths attackers use to get in, since employee credentials are frequently the easiest target in an organization.
The Next Step: Passkeys
Traditional 2FA is a major improvement over a password alone, but it isn't immune to every attack. Sophisticated phishing kits can now intercept a one-time code or exploit "MFA fatigue" by bombarding someone with approval prompts until they tap yes by mistake.
Passkeys are the industry's answer to this gap. Built on the FIDO2 standard and backed by Apple®, Google, and Microsoft, a passkey replaces your password entirely with a cryptographic key stored securely on your device and unlocked with your fingerprint, face, or device PIN. Because each passkey is tied to the specific website it was created for, a convincing fake login page simply won't work, closing the phishing gap that traditional 2FA codes leave open. Enterprise adoption has moved quickly: recent industry surveys put the share of enterprises now deploying or piloting passkeys at well over 80%. If your accounts or business tools offer passkeys as an option, it's worth turning on alongside, or eventually in place of, traditional 2FA.
For Growing Businesses: Consider a Managed Identity Platform
Free authenticator apps work well for individuals and small teams, but once you're managing accounts and permissions for a larger staff, a dedicated identity and access management platform can centralize and automate 2FA enrollment, policy enforcement, and offboarding across every employee account at once. If you're evaluating options, look for centralized policy controls, support for passkeys alongside traditional 2FA, and integration with the apps your team already uses, and compare current pricing directly with vendors, since plans and tiers change frequently.
Build It Into How You Sign In
Between a free authenticator app and the shift toward passkeys, strong account protection no longer requires much effort or cost. Many current HP laptops include built-in fingerprint readers and infrared cameras for Windows Hello®, which can serve as the "something you are" factor for both traditional 2FA and passkeys. Browse HP laptops with built-in biometric security to see current models, and for more ways to lock down your accounts, see 10 Simple Steps to Protect Your Privacy Online.
