Dr. Z has received those questions on the web and in person when he speaks at events.

The latest mobile phones/devices such as the Apple iPod, IPhone 4, HTC EVO and the Samsung Epic use wifi to do video communication. For some of these devices, you can use a 3G (cellular connection) to make video calls, but for this blog, Dr. Z is focusing on wifi.

What is wifi? It is a router which makes it possible to have a wireless connection at high speed. You normally do not find wifi on highways for example. But more and more public places have wifi coverage. If you are in a place that has wifi coverage, this means you can use those devices mentioned above to do video communication. For the most part, wifi video usually is of high quality. If you want wifi in your home, you need a router that is wifi enabled–it usually comes with an antenna or two.

A wifi hotspot means that the place where the hotspot is has wifi coverage. As an example, the following public places usually have wifi coverage: Mc Donalds, Barnes and Noble, Starbucks, Dunkin Donuts, Panera Bread, many hotels and motels, and rest areas on highways. Most wifi hotspots have a sign at the door where they are to tell the public that that place has wifi. You can download apps on the devices to tell you where the closest wifi hot spot is.

In the coming months, it is expected that the number of hotspots will grow, which means you will have more places to have high quality video communication.

If you have any questions, send a message to Dr. Z using the contact box on the upper left corner of this web page.

Dr. Z cares about your communication access.

Disclosure: Dr. Z is a contractor working with CSDVRS on several projects.

P.S. Dr. Z is traveling and he apologizes for not having a vlog to accompany this blog.