
<p>You can use your telephone to call any other phone in the world. But if you want to place a video call to someone, good luck.</p><p>Thanks to the incompatibility between video calling services including Skype, Google Hangouts and Apple's FaceTime, there's a good chance that the person you want to reach isn't on the service you use.</p><p>If you want to reach someone, you have to know what video calling service that person uses, make sure you have access to that service and, in some cases, know the nickname the person uses on that service. And to ensure you can connect with a wide range of people, you'd have to run multiple applications.</p><p>Imagine if AT&T cellphone users could only call other AT&T customers and Verizon Wireless customers could only call other Verizon Wireless users. To reach everyone, you'd have to have a cellphone for every network.</p><p><a href="http://phys.org/news/2013-10-messaging-disconnected-mess.html">Keep reading...</a></p>