TFS 1.2+ Two-Factor Authentication system.

RFC6238 Implementation of the OTP algorythm, tested with the app "Authy" from the iOS iPhone app store.

engine/database/connect.php

@@ -45,6 +45,7 @@ CREATE TABLE IF NOT EXISTS `znote_accounts` (
   `active` tinyint(4) NOT NULL DEFAULT '0',
   `activekey` int(11) NOT NULL DEFAULT '0',
   `flag` varchar(20) NOT NULL,
+  `secret` char(16) DEFAULT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB;