Fitbit Sync Decode - Part 2

If we think about what information would need to be passed back and forth, that might help when looking at the sync data, and provide ideas about what knobs to turn.  A good source for inspiration here is the user manual.

This summary data would probably go in both directions:

• Calories
• Steps (walking + running)
• Elevation (floors, distance)
• Distance (native units)
• Active score (# plant leaves, score)

These would be passed from device to server:

• Timer information (start/stop)
• Steps data series (per minute)
• Elevation data series (per minute)
• Battery level (charging status?)
• Firmware version
• Beginner mode flag (?)

These would be passed from server to device:

• Enable/Disable flag for all of the displayed metrics
• Chatter text
• Current date/time
• Stride length (walking, running)
• Body stats / BMR (for calorie estimations)
• Timezone
• Units (distance)
• Time format (ie. 12/24 hour clock)
• Left-hand/Right-hand mode
• Silent alarm settings (including repetitions on specific days)
• Sleep tracking mode (normal vs. sensitive)

Some additional inputs:

• There are 10 leaves on a fully-grown plant
• The device can store 14 days of minute by minute data, and summary data for 30 days
• The device can have 8 separate alarms