Why are 2FA backup codes critical for digital estate planning, and how should you store them?

Backup codes can be one way to recover access when a primary authenticator is unavailable. Other routes vary by provider and may include a second registered authenticator or an approved recovery process. Identify and protect the supported options for each important account. Do not assume one set of codes can recover unrelated services.

Two-factor authentication (2FA) is now standard on virtually every important online account — banking, email, cryptocurrency exchanges, social media, and password managers. While 2FA dramatically improves security during your lifetime, it creates a significant barrier for your heirs after your death.

When you die, your phone — which holds your authenticator app (Google Authenticator, Authy, Microsoft Authenticator) — is likely locked. As we covered in a previous article, Apple disables FaceID/TouchID after 48 hours of inactivity, requiring the device passcode. Even if your heir has the passcode, authenticator apps don't sync to new devices without the original QR codes or secret keys.

This is where 2FA backup codes become critical. When you enable 2FA on an account, the platform typically provides a set of one-time use backup codes. These codes can bypass 2FA in emergencies — but only if someone can find them.

Use our Death Audit Checklist to catalog every 2FA-protected account.

The 2FA cascade failure

When 2FA blocks your heirs, the failure cascades across every connected account:

Email is 2FA-protected → Heir can't log in → Can't reset passwords for other accounts → Can't receive password reset emails → Can't access banking, social media, or crypto exchanges

Banking is 2FA-protected → Heir can't log in → Can't view balances, pay bills, or transfer funds → Bill payments bounce → Account may be frozen for "suspicious activity" from failed login attempts

Crypto exchange is 2FA-protected → Heir can't log in → Can't withdraw or transfer crypto → Must go through exchange's death verification process (3-6 months) → Market may crash during the wait

Password manager is 2FA-protected → Heir can't access the master vault → All stored passwords are inaccessible → Every account must be recovered individually through support tickets

The 2FA backup codes are the universal key that unlocks this cascade. With backup codes, your heir can: • Log into your email (using a backup code instead of the authenticator app) • Reset passwords for other accounts (using email access) • Access banking and financial platforms • Withdraw crypto from exchanges • Open the password manager vault

Without backup codes, each account must be recovered individually through platform support — a process that can take months and may fail entirely.

How to compile and store 2FA backup codes for inheritance

Step 1: Generate backup codes for every 2FA-protected account For each account with 2FA enabled, log in and navigate to security settings to generate or view backup codes. If you've already generated codes but can't find them, regenerate new ones (this typically invalidates old codes).

Step 2: Document each account's 2FA method Create a spreadsheet or document listing: • Account name and URL • 2FA method (Google Authenticator, Authy, SMS, hardware key) • Backup codes (all of them — typically 8-10 per account) • Whether backup codes have been used (some platforms allow one-time use) • The authenticator app seed/QR code (if available — this allows setting up 2FA on a new device)

Step 3: Store in ZeroLatch Upload this document to a ZeroLatch encrypted vault. The data is encrypted client-side — ZeroLatch stores encrypted backup codes; Simple mode permits authorised recovery, while Private mode requires a password or recovery phrase ZeroLatch does not store.

Step 4: Configure delivery Choose a supported 1, 7, 30, 60, 90 or 180-day check-in interval. Designate your digital executor or trusted family member as the recipient. Include clear instructions: "These are 2FA backup codes. When logging into an account, choose 'Try another way' or 'Use backup code' and enter one of these codes."

Step 5: Also store authenticator app seeds If possible, export the QR codes or secret seeds from your authenticator app. These allow your heir to set up 2FA on their own device, generating fresh codes without using backup codes. Some authenticator apps (Authy, Microsoft Authenticator) support cloud backup; others (Google Authenticator) do not.

Step 6: Update when codes change If you regenerate backup codes (e.g., after losing your phone), update your ZeroLatch vault immediately. Stale backup codes are useless.

Test your account security foundation with our Password Strength Tester.