Quote:
Originally Posted by Jeff_DML
last time I looked, you had to jailbreak your iPhone to be able install a Bluetooth stack to support the 5Hz GPS modules. 5Hz would be sweet since you could hopefully get a more more usable version of your line.
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Exactly, jailbroken iPhone plus external Bluetooth GPS data-logger. Everything accurate except for speed. It seems that speed accuracy issue is related to elevation changes, though - e.g. when I'm accelerating and the track starts to slope downhill or uphill, it believes that the speed decreases.