Comment Infrastructure sucks (Score 1) 140
Any system which needs you to install additional hardware sucks. We can very well use the system planes used before GPS was deployed. INS using compasses and gyroscopes. You just need everyone to have a compass and gyroscope in their pockets. Wait everyone with an iPhone4 or a NexusS already does. Wifi based GPS enhancements are the buggy whip manufacturers of our day. Even the best and most accurate will be going out of business.