I had it installed. It works well. The dealership is over an hour away. I arrived at appointed time. I was then asked for BOTH key fobs. I only had mine, my wife(at work) had hers. I was told it absolutely can NOT be done without BOTH FOBS. No one told me this when I was there making this appointment. No one advised me of this when I called yesterday to confirm today's appointment. My only choice was to go ride another hour and a half to get my wife's FOB, then drive same hour and half back to dealership. so all in all FIVE hours driving. Three of those hours could have been very easily avoided if they informed me they needed both FOBS.
The install was quick, the software part of registering on https://www.mazdamobilestart.com/index.jsp?locale=en_US and then getting the app up and running on 2 phones was HORRIBLE and took more time than the install. Maybe because I was the first one they have done.
What if you've lost the other fob or something?? I'd be pissed and probably have cancelled my install with that dealer.