By locating and storing your Fitbit Zip serial number, you can utilize it to verify ownership with Fitbit Support if your tracker is lost and subsequently found by another user.
Having this 12-digit/letter sequence saved ensures you can easily replace it via warranty or prove it is yours if it is returned. File a warranty claim for your Fitbit device - Google Help Fitbit Zip Serial Number
Finding the serial number (SN) on a Fitbit Zip is crucial for support, as it is often worn off or tiny on the back of the device. By locating and storing your Fitbit Zip serial
If the physical number is worn off or unreachable, you can find it in the Fitbit app by going to Account > Your Device, or via your desktop dashboard settings. If the physical number is worn off or
The serial number is typically printed in very small text on the rear of the device.
If you can't open the app, look on the original packaging or box the Zip came in.