How to set up two-factor authentication on your Fitbit device

Enter PIN to use Google Wallet on Fitbit Sense 2
(Image credit: Android Central)

Fitness trackers and their associated accounts store an incredible amount of data, including heart rate data, your GPS location, your menstrual cycles, sleep data, and more. Whether for personal privacy or safety reasons, you don't want any of that data getting shared with others. That's where Fitbit's 2FA option comes in handy.

Fitbit didn't offer two-factor authentication for a long time; now that it does, you should take full advantage of it immediately, or double-check that you already have. We'll show you how to set up 2FA on your Fitbit account so that your fitness data remains as secure as possible.

How to set up two-factor authentication on your Fitbit device

1. Open the Fitbit app on your phone.
2. Tap on your profile picture in the top left corner of the app.
3. Tap on Account Settings.

(Image credit: Android Central)

4. Tap on Two Factor Authentication.
5. Tap the toggle next to Two Factor Authentication to begin the setup process.
6. Add your phone number.

(Image credit: Android Central)

8. Enter the verification code sent via SMS, then select Confirm.
9. Type in your password once again.
10. Tap the Submit button.

(Image credit: Android Central)

After you've entered your password, you will see a two-factor authentication recovery code. Take a screenshot and/or write it down in a secure note, or perhaps save it on one of the best password manager apps

If you ever need to change the phone number associated with your account, go back to the 2FA settings page, toggle it off, and enter whatever verification code you receive. Once Fitbit 2FA is disabled, you can follow the above steps again, at which point you'll have the opportunity to add a new phone number.

Option B: Switch to a Google account

SMS is not the best system for managing two-factor authentication. As security expert Jerry Hildenbrand explains in that link, text messages can be intercepted or sent to the wrong number, or carriers can be tricked into authorizing a SIM card for someone else's number. 

Fitbit probably won't bother upgrading to a new system. Why? Because Google acquired Fitbit years ago, and now the popular fitness brand is pushing users to merge their Fitbit accounts into their Google accounts. By 2025, you'll require a Google account to use Fitbit. 

Google has much better 2FA options for its accounts. Once you've integrated your Fitbit account and start logging in with your Gmail credentials, that'll essentially solve your security problem.

So if you follow our guide on how to migrate your Fitbit account to Google, you're halfway there. 

Once you have your Google-Fitbit hybrid account set up, you'll need to know how to enable two-factor authentication on your Google account if you haven't already. Google Prompt, Google Authenticator, or a physical security key are all 2FA options that are more secure than Fitbit's SMS option. 

Every Fitbit tracker needs protection

If you sought this guide out, you probably know why it's worth setting up 2FA on your Fitbit. But in case you need a push, keep in mind that your Fitbit account will store all kinds of sensitive data, from where you start your runs (likely near your home) to your weight and sleep data. 

Whether you protect your Fitbit account with SMS 2FA or rely on Google and its app-based protection, you're keeping that data secure and tied to your physical smartphone.

Now that your Fitbit account is protected, you may be interested in upgrading from your current Fitbit tracker to one of the best new Fitbit devices. The fitness brand has released several excellent devices in the past couple of years, from the petite and affordable Fitbit Inspire 3 to the premium, sensor-packed Fitbit Sense 2.

We can't choose for you which Fitbit will fit your needs, but if you need a fresh start with the app without spending too much, the Inspire 3 would be our recommendation.

Michael L Hicks
Senior Editor, VR/AR and fitness

Michael is Android Central's resident expert on fitness tech and wearables, with an enthusiast's love of VR tech on the side. After years freelancing for Techradar, Wareable, Windows Central, Digital Trends, and other sites on a variety of tech topics, AC has given him the chance to really dive into the topics he's passionate about. He's also a semi-reformed Apple-to-Android user who loves D&D, Star Wars, and Lord of the Rings.

For wearables, Michael has tested dozens of smartwatches from Garmin, Fitbit, Samsung, Apple, COROS, Polar, Amazfit, and other brands, and will always focus on recommending the best product over the best brand. He's also completed marathons like NYC, SF, Marine Corps, Big Sur, and California International — though he's still trying to break that 4-hour barrier.

With contributions from