- In the January 2026 edition of the “Google System Release Notes,” which provides the latest information on “Google System Updates,” Google announced support for “CTAP2” authentication via NFC for security key devices such as the “Titan Security Key” that support the FIDO2 “CTAP2” protocol.
- With “Google Play Services” app v26.03 or later, CTAP2 will be supported via NFC on Android-related platforms.
- This means that “Passkey” authentication via NFC is now possible without having to connect the “Titan Security Key” to the device’s USB port.
In the January 2026 “Google System Release Notes”—the latest update information for the “Google System Update” aimed at improving the security and reliability of Android-related devices released on Monday, January 26, 2026—Google announced support for “CTAP2” authentication via NFC for security keys such as the “Titan Security Key” that support the FIDO2 “CTAP2” protocol.
In addition to USB (USB-A / USB-C) connectivity, the “Titan Security Key” supports wireless connection via Near Field Communication (NFC). However, until now, while the USB connection fully supported “CTAP2” and could be used as a device for “Passkey” authentication, the NFC connection was limited to supporting the older “CTAP1” standard due to constraints of the Android platform, allowing only limited authentication such as two-step verification.
However, from “Google Play Services” app v26.03 onwards, “CTAP2” will be supported via NFC on Android-related platforms. This means that “Passkey” authentication via NFC is now realized without the need to plug the “Titan Security Key” into the device’s USB port.
This “CTAP2” support for security key devices via NFC in “Google Play Services” v26.03 or later will be rolled out across Android devices, PCs such as ChromeOS, as well as Android Auto, Google TV / Android TV, and Wear OS devices. Of course, this feature cannot be used if the device itself does not support NFC.
Source：Google
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