I won't package this software for Debian, and I don't think anybody should: upsteam says: "the correct thing to be doing is using U2F, so do not use this library if you are writing new software, please investigate U2F as that will be more secure than using the proprietary YubiCo solution for verifying hardware tokens!" (at https://git.tuxed.net/fkooman/php-yubitwee/about/ ). Bye, Joost