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Glossary
Two-Factor Authentication
Two-factor authentication adds a second proof step after the password, often through a text message, authenticator app, hardware key, or approval on another device.
Definition
Two-factor authentication, often shortened to 2FA, is an extra security step that asks for a second code, device approval, or physical security key after the password is entered.
Why It Matters
Two-factor authentication protects accounts, but it also explains why families can lose access even when they know the password. The second factor may still depend on a phone number, an authenticator app, or a device no one else can unlock.
Planning for 2FA means documenting how accounts can be recovered, not weakening the security itself.
Common Mistakes
- Assuming that a password alone is enough if something happens.
- Canceling the phone number or wiping the device that receives login codes before the account list is stable.
- Failing to record where authenticator apps, backup codes, or hardware keys are kept.
Safe Best Practices
- Document which accounts use text codes, authenticator apps, security keys, or approvals on another device.
- Record the location of backup codes and recovery devices in a secure plan.
- Treat the phone number tied to 2FA as a high-priority estate asset until access is stable.
Related Terms
Passkey
A passkey is a modern sign-in method tied to a device, browser, or password manager, often replacing or reducing the need for a traditional password.
Digital Estate Plan
A digital estate plan is a set of instructions that explains what accounts you have, what should happen to them, and how trusted people should act if you die or become unable to manage them.
Inactive Account Manager
Inactive Account Manager is Google's planning tool that lets someone decide what should happen to certain Google data or contacts if the account becomes inactive for a defined period.
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