Windows Hello vs Face ID: Which Biometric Login Is Safer?

Windows Hello and Face ID both let you unlock a device by looking at it instead of typing a password, but they are built on different hardware and different trust models: Windows Hello is a flexible framework that can use an infrared camera, a fingerprint reader, or a PIN across a wide range of third-party laptops, while Face ID is a single, fixed TrueDepth camera system that Apple controls end to end on iPhone and iPad Pro. Both route the final match through an isolated security chip rather than the general operating system, and both can unlock FIDO2 passkeys, but the fine print on accuracy, spoofing resistance, and platform support differs in ways worth knowing before you rely on either one for sensitive accounts.

How Windows Hello and Face ID actually work

Face ID relies on one specific piece of hardware: Apple's TrueDepth camera. According to Apple's own support documentation, the system projects thousands of invisible infrared dots onto your face to build a 3D depth map, while simultaneously capturing an infrared image. A portion of the device's neural engine, running inside the Secure Enclave, converts that depth map and infrared image into a mathematical representation and compares it against the face data captured during enrollment. The camera activates when you raise or tap to wake the device, when a notification needs to be authenticated, or when a supported app requests it, and Apple says it works best at a distance of roughly 25 to 50 centimeters from your face.

Windows Hello is architecturally different because it isn't tied to one sensor. Microsoft's own documentation describes Windows Hello as "reliable, fully integrated biometric authentication based on facial recognition or fingerprint matching," built using "a combination of special infrared (IR) cameras and software to increase accuracy and guard against spoofing." Facial recognition uses an IR camera that can tell a living face from a photo or screen; fingerprint recognition uses a capacitive sensor, either integrated into a laptop or external over USB; and HoloLens 2 adds iris recognition as a third biometric option. If no biometric sensor is present, or if you'd rather not use one, Windows Hello falls back to a device-specific PIN, which Microsoft treats as functionally equivalent to a biometric gesture for sign-in purposes.

Hardware requirements, side by side

Because Face ID is Apple's own hardware, there's nothing to configure: if your iPhone or iPad Pro has a TrueDepth camera, Face ID is already present. Windows Hello's biometric options, by contrast, depend entirely on what sensor the PC manufacturer installed, which is why Microsoft publishes a formal hardware specification that vendors must meet before a sensor can be marketed as "Windows Hello compatible."

One practical consequence of this split: Windows Hello's security depends on which PC you own, because a cheap webcam without IR hardware simply can't run facial recognition at all, while a certified sensor from one vendor and one from another can have different real-world accuracy within the ranges Microsoft allows. Face ID has no such variance between devices, because Apple builds and tunes the same TrueDepth system across its supported lineup.

Where your biometric data actually lives

Both companies are explicit that raw biometric data never leaves the device or reaches a remote server, but they describe the storage mechanism slightly differently. Apple says Face ID data — including the mathematical representation of your face — is "protected with a key available only to the Secure Enclave," a hardware-isolated compartment that Apple says iOS, apps, other users, and even Apple itself cannot access. That data is not backed up to iCloud.

Microsoft's language is similarly direct: "Windows stores biometric data that is used to implement Windows Hello securely on the local device only. The biometric data doesn't roam and is never sent to external devices or servers." Because there's no central server holding anyone's face or fingerprint templates, Microsoft notes there's "no single collection point an attacker can compromise to steal biometric data" — the same logic Apple applies to the Secure Enclave. In both ecosystems, what actually authenticates you to a remote service like a Microsoft Entra account or a website isn't the biometric scan itself; it's a cryptographic key that's unlocked by a successful local match.

Spoofing resistance and anti-spoofing claims

Face ID's anti-spoofing design starts with depth: because the TrueDepth camera requires an actual 3D depth map, Apple says printed photos or flat images can't fool it. On top of that, Apple runs dedicated anti-spoofing neural networks designed to resist masks, and the camera randomizes the sequence and pattern of its 2D and depth captures specifically to defeat digital and physical spoofing attempts. Face ID is also "attention aware," checking that your eyes are open and your gaze is directed at the device before unlocking — a check Apple says is always required when a mask is detected, and one that can be turned off separately if needed (it's automatically disabled when VoiceOver is active).

Windows Hello's anti-spoofing is built into Microsoft's hardware certification requirements rather than a single centrally controlled camera. Microsoft requires that every facial recognition and fingerprint sensor shipped as "Windows Hello compatible" include anti-spoofing or liveness-detection measures as a condition of certification — it isn't optional for manufacturers. The IR cameras used for facial recognition are specifically chosen because they "reliably tell the difference between a photograph or scan and a living person," the same depth-and-light-based logic Apple uses, just implemented by different vendors to Microsoft's spec rather than by Microsoft itself.

Accuracy and false match rates, by the numbers

This is one of the few places where both companies publish real statistics rather than marketing language, and the numbers are directly comparable.

Apple states that the probability of a random person unlocking your iPhone or iPad Pro with Face ID is less than 1 in 1,000,000, with a single enrolled appearance, whether or not you're wearing a mask. Apple also discloses that this probability is higher for identical twins, siblings who look like you, and children under 13, whose facial features may not yet be fully distinct — a caveat worth knowing if you're setting up a device for a younger family member.

Microsoft publishes similar figures as part of its Windows Hello hardware requirements for manufacturers. For facial recognition sensors, the required False Accept Rate (the chance of an unauthorized person being verified) must be below 0.001%, with a False Reject Rate (a legitimate user being incorrectly denied) below 5% without anti-spoofing checks, or below 10% once anti-spoofing/liveness detection is factored in. Fingerprint sensors must meet a False Accept Rate below 0.001% to 0.002%, depending on sensor type, with a similar sub-10% real-world rejection rate. Iris recognition, available only via HoloLens 2, targets a False Accept Rate of roughly 1 in 100,000 — looser than Face ID's published figure, though iris recognition is a niche case limited to that one device category rather than phones or laptops.

Read strictly, Apple's disclosed 1-in-1,000,000 false-accept rate for Face ID is tighter than Microsoft's minimum bar of roughly 1-in-100,000 for facial recognition sensors (0.001% False Accept Rate). That doesn't necessarily mean every Windows Hello camera is less accurate in practice — Microsoft's figure is a hardware certification floor, not a single product's measured result — but it does mean Face ID's number is both uniform across supported devices and independently the stricter published figure of the two.

Passkey and FIDO2 integration

Both systems plug directly into the passwordless passkey standard built on FIDO2 and WebAuthn, though the specifics of how each works differ.

On Windows, Microsoft describes Windows Hello as supporting sign-in to "a Microsoft account (MSA)" and to "Identity providers (IdPs) that support Fast ID Online (FIDO) v2.0 authentication," explicitly noting that "with FIDO/WebAuthn, Windows Hello can also be used to sign in to supported websites, reducing the need to remember multiple complex passwords." Microsoft's documentation stresses that this is key-based authentication: there's no symmetric secret like a password that can be phished or stolen from a server, because the private key behind a passkey is generated and protected inside the device's security module.

On Apple devices, Face ID or Touch ID authorizes the use of a passkey, which then signs you in to the app or website — Apple's support documentation states plainly that these biometrics "can be used to authorize use of the passkey." Apple passkeys sync across a user's devices through iCloud Keychain, which Apple describes as end-to-end encrypted, with keys Apple itself doesn't have access to and protections against brute-force recovery attempts. The FIDO Alliance, the industry body behind the underlying WebAuthn and CTAP standards, notes that passkeys can be synced through a platform credential manager (as Apple does via iCloud Keychain) or kept device-bound, and that biometric processing for a passkey always stays on the user's device rather than being sent to a remote server — the same local-only principle both Microsoft and Apple apply to the biometric scan itself.

If you're deciding whether to lean on passkeys at all versus sticking with a traditional password-plus-2FA setup, our broader breakdown of how passkeys stack up against passwords covers the tradeoffs in more depth.

Two-factor authentication and enterprise management

Windows Hello for Business, the enterprise-grade extension of Windows Hello, is explicitly built around two-factor authentication. Microsoft frames it as combining "something you have" (a device-specific private key protected by the device's TPM) with "something you know" (a PIN) or, optionally, "something that's part of you" (a biometric gesture that can substitute for the PIN, with the PIN always available as a fallback). Microsoft adds certificate-based authentication, device attestation, and conditional access policy support for organizations managing fleets of devices, along with Microsoft Entra ID and Active Directory account support rather than just a personal Microsoft account.

Face ID doesn't have a direct enterprise-tier equivalent described in Apple's own consumer-facing documentation in the same terms, but it serves a comparable second-factor role at the OS level: unlocking the device (something you have) still typically requires the passcode fallback (something you know) under Apple's own triggering conditions — after a restart, after 48 hours without an unlock, after a remote lock command, or after five failed Face ID attempts.

Platform and device support

Windows Hello works across both Windows 11 and Windows 10, per Microsoft's own support documentation, though Windows Hello for Business specifically requires Windows Pro, Enterprise, Pro Education/SE, or Education editions with a qualifying license (Pro/Pro Education/SE, or Enterprise/Education E3 or E5/A3/A5 tiers). If you're still running an older Windows 10 machine, it's worth checking our guide on what to do as Windows 10 support winds down, since biometric sign-in options and hardware requirements are tied to what the underlying OS and hardware generation support.

Face ID, by contrast, is limited to iPhone and iPad Pro models that include Apple's TrueDepth camera — Apple's own support page doesn't enumerate the full device list on the main Face ID explainer, instead pointing to a separate compatibility reference, but confirms the feature is restricted to that hardware tier rather than being available across every iPhone or iPad. Older or budget iPhone and iPad models without a TrueDepth camera use Touch ID instead.

Which one is actually more secure?

Neither company's own documentation claims outright superiority over the other, and the honest answer depends on what you're optimizing for. Face ID has the advantage of a single, Apple-controlled hardware and software stack with one published, independently verifiable accuracy figure (1 in 1,000,000) across every supported device, plus mandatory liveness and attention checks baked into every unit. Windows Hello has the advantage of flexibility and broader hardware support — multiple biometric modes, including fingerprint and iris options Face ID doesn't offer at all — but its real-world accuracy will vary somewhat between PC manufacturers, bounded by Microsoft's certification floor rather than a single tuned implementation.

In practical terms, both push the actual secret — a cryptographic private key — into a hardware-isolated enclave that the operating system itself can't read, and both treat the biometric scan as a local unlock gesture rather than something transmitted anywhere. For most people, the bigger security win isn't choosing between these two systems; it's that either one, paired with a passkey, removes the much larger risk that a password represents: reuse, phishing, and server-side breaches. If you're also layering network-level privacy tools into your setup, it's worth understanding how a feature like Apple's iCloud Private Relay fits in relative to a VPN, which we cover in a separate comparison of iCloud Private Relay and VPNs.

What to do next

If you're deciding how to configure sign-in on a device you already own, the practical steps are straightforward. On a Windows PC, open Settings, go to Accounts, then Sign-in options, and check which biometric methods your specific hardware actually supports — facial recognition and fingerprint both require a certified sensor, so an older or budget laptop may only offer a PIN. On an iPhone or iPad Pro, Face ID is already built in if your model has a TrueDepth camera; there's no setup decision beyond enrolling your face under Settings. In both cases, enabling a passkey wherever a website or app offers one is the single change most likely to meaningfully improve your account security, since it lets Windows Hello or Face ID stand in for a password that could otherwise be phished, reused, or leaked in a breach.

Written bySana Qureshi

Sana Qureshi runs the security and privacy desk. She reports on actively exploited vulnerabilities, vendor patches and data breaches, and covers the password managers, VPNs and authentication tools readers use to protect themselves. Her alerts cite vendor advisories, CISA and the CVE record directly.

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