Two issues:<p>1. I have to question the effectiveness of using 'magnetic anomalies' to determine absolute position. Isn't the sensor just reading one value (magnetic field strength)? Couldn't that be anywhere on the map with that value? Do people have to turn it on at a specific starting point?<p>2. It says 'communicates with the API' while tracking. Most large buildings that I've been in like a conference center have marginal data reception.
Given that mobile phones have wires and electricity then they are creating small magnetic waves which will impact others.<p>That all said this technolody is very suitable for underwater GPS were a GPS signal does not penetrate the water due to weakness and how bad radio travels thru water in general.<p>So given that I would have to questions if the military don't already use something very similiar in submarines. Lets say I'd be very supprised if this was not being already utilised in some form or another in that feild.
There's already a front-page discussion of this:<p><a href="http://news.ycombinator.com/item?id=4217329" rel="nofollow">http://news.ycombinator.com/item?id=4217329</a>
I find it hard to believe that they have legit Trademarks on the phrases "Floor plans" and "Map Creator".<p><a href="http://www.indooratlas.com/technology.html" rel="nofollow">http://www.indooratlas.com/technology.html</a>