[$] One-time passwords and GnuPG with Nitrokey

A few years ago, the hardware vendor Yubico made a bit of a splashwhen it introduced its YubiKey line of inexpensive hardware securitytokens powered by open-source software. With its most recent productrelease, however, Yubico has dropped open source and started deploying onlyproprietary software in its devices. Consequently, many communitymembers have started looking for a viable replacement that will adhereto open-source principles. At present, one of the leading contendersfor Yubico's departed customers is Nitrokey, which manufactures a lineof hardware tokens capable of generating one-time passwords (OTPs),storing and using OpenPGP keys, and several other features. Thedevices made by Nitrokey run open-source software and are open hardwareas well.