I looked at what is on the market, but sending my bio metrics to fitbit or garmin servers is not something I want to do. Is there a fitness tracker band that is hackable in a sense that I can get the data out of it without proprietary software? I don't mind the firmware being closed source, as long as there is no LTE. I just want to sync and manage my data myself. Pretty much any Garmin device does exactly what you're looking for. The data is encoded in the FIT file format, which has a public SDK [1] you do need to accept a license agreement to view it, though, if that matters.
There are wrappers for most languages and if you want to just translate the data to CSV, there are pre-made tools to do that too. I don't think you need to enable sync, so keeping the data local wouldn't be an issue. ISL on Dec 1, parent next [β]. I am unwilling to accept an SDK's license in order to view my own data produced by my own hardware.
With a quick search, I see that others may have extended Suto's work [3]. I'm pro-Garmin but can't understand hiding a measurement instrument's output format behind a closed-door license.
Isn't SDK licensing pretty normal, outside of open source? By definition, if it's not open source, then you're looking at a proprietary license of some sort. That's not by definition at all- a work can be open source with a "proprietary license of some sort", or closed source, with source that's liberally licensed- but never published.
What I meant is the outside-of-companies open source community. It's not weird for a company to license their SDK, no matter what it's for. Par for the course rather. ISL on Dec 1, root parent prev next [β]. The trouble is that the FIT file specification, in addition to the parsing libraries, is behind the license.
