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Your information should not disappear. Its tied to your email address.
But Yes someone could use it. But they need to set it up on their account
Im so sorry you lost it. I do hope you find it. Could it be close?
If it could be try this
Find Lost Fitbit:
https://help.fitbit.com/customer/portal/articles/1008670-i-lost-my-fitbit-tracker
Wendy | CA | Moto G6 Android
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