In the last decade, video conferencing systems have become an essential part of modern communication. Initially predominantly a business application due to its high acquisition cost, video conferencing has made its way from the boardroom to the personal sector and even to hand-helds and mobiles. In addition to the basic combination of audio and video streams, there are many extra capabilities like onscreen drawing, file sharing, and facial recognition. Video conferencing enables real-time, synchronous communication independent of the participants’ location. Although technology has improved, video conferencing systems are still not considered to be as good as face-to-face meetings and...