What is two-factor authentication?
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Two-factor authentication is the official term for a security system that requires 1) authentication from something only you own, and 2) authentication from something only you know. It is usually a combination of a physical identifier and a piece of information, like using a debit card and PIN at an ATM.
Table of Contents
FAQ
You got this—all you have to do is start!
We make filing taxes delightfully simple with our flat–rate price. Every feature included for everyone.
Start filingMore Tax Guides
Tax Reform 101
FAQ
Tax-Related Identity Theft
Filing Your Taxes 101
For Students and New Grads
Taxes for Families
Affordable Care Act
Taxes and Your Job
Taxes for the Self-Employed
Tax Breaks for Homeowners
Health and Life Insurance
Investing and Retirement
Tax Savings Strategies
IRS Tax Dates
State Taxes