YubiKey challenge-response USB and NFC driver
ykDroid is a USB and NFC driver for Android that exposes the challenge-response feature of YubiKeys for use by other Android apps.
ykDroid is free and open source software. The source code is available at https://github.com/pp3345/ykDroid.
Yubico and YubiKey are registered trademarks of Yubico.