Editing 1809: xkcd Phone 5
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; 28-factor authentication | ; 28-factor authentication | ||
− | : An {{w|Authentication#Factors and identity|authentication factor}} is a way of proving one's identity. There are [ | + | : An {{w|Authentication#Factors and identity|authentication factor}} is a way of proving one's identity. There are [http://www.nikacp.com/images/10.1.1.200.3888.pdf 3 generally recognized forms]: something you know, something you have, and something you are. It can be a password, a fingerprint, a physical key, etc.... Secure applications may include two or more factors; a common example is the "PIN and chip" system used with credit cards, where you need both the card and secret code to authorize a transaction. Many online services now provide two-factor authentication to protect against password-based attacks. 28-factor authentication would likely be very secure in theory but also so impractical that it would be unusable. The user will need to prove their identity 28 different ways which would be so time consuming that would outweigh the convenience of a smart phone. A 2-factor smoke detector was soon after mentioned in one of the tips in [[1820: Security Advice]]. |
The title text that says that the phone will be returned to you by the toll operators is a reference to E-ZPass partnership feature; see explanation in the table regarding that feature. | The title text that says that the phone will be returned to you by the toll operators is a reference to E-ZPass partnership feature; see explanation in the table regarding that feature. |