Password und telephone: was sie gemeinsam haben

1. Schritt 1. Password — wird verwendet in — Two-factor authentication. Password + a second factor.
2. Schritt 2. Two-factor authentication — nutzt — SMS. Codes by SMS.
3. Schritt 3. SMS — funktioniert wie — Electrical telegraph. A short text message is the heir of the telegram.
4. Schritt 4. Electrical telegraph — entwickelte sich zu — Telephone. The telephone grew out of attempts to send several signals over telegraph lines (the “harmonic telegraph”).

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