Have you ever noticed that it is very difficult to establish eye contact during video calls? Be it in Skype, hang out or in face time you have to look at the camera to establish eye contact with a person rather than looking in the eye which is on the screen normally below the camera.
This is feature is same for laptops, webcam enabled desktops and even in mobile cameras. The only way to establish eye contact is to look at the camera.
This has some major disadvantages. People are comfortable talking to another if there is no need of eye contact. This is the reason telephone calls are more preferred these days rather than face to face talking. It has become much more easier through chats and SMS where there is even no need for voice. This gives extra confidence to the user.
The progression of distance real time communication is as follows
1. Skype (real time video, no eye contact)
2. Telephone calls (real time audio, no visual, no eye contact)
3. Chats (real time, no audio, no visual, no eye contact)
If people continue in this, there will be difficulties when they actually need to talk directly to a person. That is, a person who is accustomed to video calls will have much difficulty to establish eye contact with a person when required.