Hmm - I'm surprised that just being in a jacket would do that, given that the device works fine in a car, inside a metal & glass cage. I'm just waiting for the new otterbox armour case for the iPhone - will try it again then.

Thanks.

I bought Laptimer Pro two days ago and tried to use it yesterday on a track day at Knockhill in Scotland. AFAIK, I'd set everything up (including loading the circuit data) according to web site documentation, clicked the "Drive Now" button when indicated and put the phone in the pocket of ...