gives us more addresses ! devices are getting smaller, more ubiquitous ! “devices” include homes appliances (refrigerators, washers, coffee machines, dryers), roads, air pollution monitors, (human) body monitors, etc “In five years, by 2018, Earth will be home to 7.6 billion people, says the United Nations. By contrast, some 25 billion devices will be connected by 2015, and 50 billion by 2020, says Cisco.” http://www.businessinsider.com/what-you-need-to-know-about-the- internet-of-things-2013-3?op=1#ixzz3FxCafwWe