From Aerospace, Space, Defence to Security & Transportation, Thales helps its customers to create a safer world by giving them the tools they need to perform critical tasks
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When you use SMS 2FA, a code is sent to you. This code changes every minute or so. Those are known as "" (OTP).
It's the same idea whether you have a hardware key (#Yubikey/#Token2), it's generated by your phone or generated by Twitter.