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Cybersecurity & Cryptography · Recorded milestone

Two-factor login

Recorded year2011

Phone codes and apps add a second factor to everyday accounts.

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Built on

2G digital mobile & SMSRecorded · 1991enables
SmartphoneRecorded · 1994enables

Led to

PasskeysRecorded · 2022enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.