Because Wi-Fi is such a new field, networks of Wi-Fi hotspots are still relatively small. One implication is that incumbent telecommunication providers—such as AT&T Wireless, Sprint, T-Mobile, and Verizon—have a head start.
The hotspot counts in this section are based on the actual number of hotspots that I could locate using the directories listed earlier in this appendix.
The number of hotspots that I've noted are probably low now, and there will certainly be more by the time you read this book, but they do give an idea of the relative size of these networks.
You should know that most of the Wi-Fi networks claim a greater number ...