No more than all the other radio signals (e.g. AM, FM, TV, satellite, RC toys) that are "all around us" too.
Are all wifi plans unlimited
All of the iPod Touches have wifi in them, so you can connect them to wifi.
No, not all Sony devices have WIFI. Only sony computers/laptops and psp use WIFI.
All Wii's have WiFi
All you do is tell the people that you got the wifi from that you want to put lock on your wifi. They'll do it for you :)
Yes, all good Routers have WIFI
Most McDonalds have free wifi. Keep in mind wifi service is not available in all areas as of yet.
Southwest is adding wifi to more planes all the time. They don't expect to have wifi on all flights until 2012.
yes. you just have to go on setting and it's gonna show all of the things you have on your iPad in a line going from up to down look and you are gonna see wifi
yes it has all blackberry got wifi
all of them
A wifi phone is just a phone that can use wifi. You would connect it to a wifi network to get a better signal for faster web browsing than a cell tower.