cool, it may I suggest the following enhancements:

1. record accelometer data
2. be able to record as fast as data can be read (esp for accelometer sub-second resolution would be needed).
3. have some sort of "cli" mode where the raw data could be dumped via pipe for immediate transfer (think telemetry...)
4. barring 3. have a way to store "raw" data in something that can be sensibly queried (like sqlite) (and being able to put the datafile on the removable SD card since it's much faster than the internal eMMC)

see http://talk.maemo.org/showthread.php?t=53353