personal encryption method which individualizes your online security by providing a secondary layer of encryption via the USB port. It can provide you a strong protection for your Google, Facebook, Dropbox, Github, Salesforce and other website accounts which support U2F protocol. It can be used on Windows 7, Windows 8, Windows 8.1, Windows 10, Mac OS X, Linux (CentOS, Ubuntu, Debain, Fedora, Chrome OS) with latest Chrome browser or Opera browser installed.