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.
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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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