Can I use Amazon Two-Step Verification without a phone app?

Yes. Amazon accepts codes from any standard authenticator app, and the Authenticator extension generates them in Chrome on your computer. It reads the barcode straight off the Amazon setup page. Amazon still needs a backup method, which can be a phone number or a second authenticator app.

Do I have to enter a code every time I shop on Amazon?

No. When you sign in with a code, check “Do not require codes on this device”, and that computer will only ask for your password from then on. Leave it unchecked on shared or public computers.

My Kindle or another device does not ask for a code. How do I sign in?

Use Amazon’s Alternate Sign-in: enter your email and password and submit; if you get an error, add the current code from the extension to the end of your password and submit again. For example, the password “amazon123” with the code 456789 becomes “amazon123456789”.

What if I lose access to my authenticator?

Sign in with your backup method or from a trusted device, then set up the authenticator again under Login & security. If neither works, choose “Didn’t Receive the Code” at the code prompt and then “Two-Step Verification Account Recovery”. Keeping the extension’s automatic backups on means a reinstall does not cost you the account.

Amazon Authenticator App on PC — Turn On Two-Step Verification

An Amazon account holds your saved cards, addresses and order history, and a stolen password is enough to place orders or change the delivery address. With Two-Step Verification on, Amazon asks for a security code as well as the password on computers and devices you have not marked as trusted — so a leaked password alone no longer gets anyone in.

Turn on Two-Step Verification at Amazon

Amazon will not turn on Two-Step Verification without a backup method. Have a phone number that can receive text messages ready, or a second authenticator app, before you start.

Sign in at amazon.com on your computer, open “Account & Lists” and choose “Account”.
Select “Login & security”.
Click “Turn on” next to 2-Step Verification.
Choose “Authenticator App”. Amazon shows a barcode — leave it on the screen and add it to the extension as described below, then enter the code and click “Verify code and continue”.
Add the backup method Amazon asks for — a phone number or another authenticator app — and verify it.
On the “Almost done…” page, choose whether this browser should ask for codes, then click “Got it. Turn on Two-Step Verification”.

Amazon’s own instructions

Add Amazon to Authenticator

Install 2FA Authenticator from the Chrome Web Store and pin it to the toolbar, so its icon is one click away.
Leave the Amazon page with the QR code open. Click the Authenticator icon, then “Add Account” → “QR Code” → “Scan QR from screen”.
The account appears in the list with a six-digit code that changes every 30 seconds. Rename it if you like — the name is only for you.
Go back to Amazon and type the current code into the confirmation field. If it is about to expire, wait for the next one.
Amazon confirms that two-factor authentication is on. From now on it will ask for a code when you sign in — click the extension icon and copy it.

No QR code, or it will not scan? Look for the option to enter a key manually on Amazon’s setup screen, copy the key, and add it in the extension with “Add Account” → “Manual” → “Secret Key”.

Get 2FA Authenticator for Chrome — free

Keep a backup method for Amazon

Amazon does not hand out backup codes: its fallback is the backup method you add during setup — a phone number or a second authenticator app. You can add more, or change them, later under Login & security → 2-Step Verification. If you lose the authenticator, Amazon asks you to sign in with a backup method or from a trusted device first; only after that does its “Two-Step Verification Account Recovery” process come in.

The code is not accepted?

Almost always the computer’s clock. The codes are calculated from the current time, so a clock that is a minute off produces codes that look right and are refused. Turn on automatic date and time in your system settings — step-by-step for Windows, macOS and Linux.

If the clock is right, check the key itself: paste it into the TOTP code generator and compare the code with the one in the extension. If they differ, the key was copied wrong — add the account again.

Questions

Can I use Amazon Two-Step Verification without a phone app?: Yes. Amazon accepts codes from any standard authenticator app, and the Authenticator extension generates them in Chrome on your computer. It reads the barcode straight off the Amazon setup page. Amazon still needs a backup method, which can be a phone number or a second authenticator app.
Do I have to enter a code every time I shop on Amazon?: No. When you sign in with a code, check “Do not require codes on this device”, and that computer will only ask for your password from then on. Leave it unchecked on shared or public computers.
My Kindle or another device does not ask for a code. How do I sign in?: Use Amazon’s Alternate Sign-in: enter your email and password and submit; if you get an error, add the current code from the extension to the end of your password and submit again. For example, the password “amazon123” with the code 456789 becomes “amazon123456789”.
What if I lose access to my authenticator?: Sign in with your backup method or from a trusted device, then set up the authenticator again under Login & security. If neither works, choose “Didn’t Receive the Code” at the code prompt and then “Two-Step Verification Account Recovery”. Keeping the extension’s automatic backups on means a reinstall does not cost you the account.

Your codes, one click from the login page

Authenticator keeps your 2FA codes in the browser, on your device only — free, open source, no account and no phone needed. Local backups and optional password protection come built in.