Mike--
Well, it's really just wishful thinking on my part, since I don't have the camera yet. Here's the information I can find.
Harry's lap-timer on iOS supports
external cameras via USB. It lists GoPro and Sony, but not Mobius.
General documentation
here. Specifically about video
here. FAQ's and how-to
here.
Mobius instructions
here, including how to use it in web-cam mode.
Hope this helps.
Greg
Hybrid Mode
