whitemice, Thank you for all the links. The spotigo will work for trade shows. The picture I had was a bit different but would net the same result. It was two wi-mesh tropos like radios and a floor map. The radio signals provide two possible locations and a local app uses history, velocity and geometry (walls and aisles) to pick the right one.
The use case is: a pedestrian able locate the person or object they are looking for to within a meter - consider finding a child at a crowded public event. That is a pretty general use case with an extremely important example attached to it. Oh, and I want it to be less expensive than GPS. On Jul 9, 2:45 am, whitemice <[EMAIL PROTECTED]> wrote: > Having an accelerometer on a chip is a great idea. They are cheap, > accurate and available on more and more > phones:http://www.dimensionengineering.com/accelerometers.htm > > The problem is that you are trying to use them for inertial > navigation, which is inherently complex, requires both orientation and > acceleration sensing and some sort of position initialisation. Don’t > forget that mobile software developers have to make do with *standard* > hardware.http://en.wikipedia.org/wiki/Inertial_navigation_system > > I see that you are clutching at straws, trying to make your use case > work. To that end, have you considered investigating Wi-Fi based > positioning?http://www.spotigo.com/products-and-services/spotigo-wifi-based-posit... > > Bluetooth can also be useful, but I won’t comment on that until I have > been allowed to play with the actual Android API. ;-) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to android-discuss@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
