Thanks @jasok2. There is nothing specific on your data. I don't know well how FITBIT works but maybe they try to do something as soon there is a text record on the tag?
The solution is tested on Windows 7, 8, 8.1 and 10. Works on any edition (family, professional...)
The commercial version is used on few tablets by customers but this NFC community version should works on it too.
Only local accounts are supported for NFC Community edition, this is a restriction on the community version to ensure it is used for personal use. If you want to use a domain the commercial version is required (but it can be discussed, we had to start from somewhere ^^).