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by olov
4243 days ago
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I beg to disagree. The credit card is "something you know" just as much as "something you have", because when used on the web it is just a (copyable) 23 digit number. Whether you remember the number or look it up in your wallet is no different than whether you remember your password or store it on a post-it. Other things "you have" in popular 2FA solutions are quite different, for instance your mobile phone number identity (for SMS) or your Google Authenticator. |
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