Meet the Signet HC: an all secure USB flash drive that can serve as a 2-factor authentication tool. It is based on an open hardware and open source hardware and works with Windows, MacOS, GNU/Linux, and Android devices. Signet requires you to take action to allow sensitive commands to be executed.
Signet HC’s button flashes blue when any sensitive command is sent. You can also use this to securely log on to websites.
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