Internet of things different from one device to the next but there are basic characteristics shared by most. IoT creates opportunities for more direct integration of the physical world into computer-based systems, resulting in efficiency improvements, economic benefits, and reduced human exertions. The number of IoT devices increased 31% year-over-year to 8.4 billion in the year 2017 and it is estimated that there will be 30 billion devices by 2020. The global market value of IoT is projected to reach $7.1 trillion by 2020. Ambient intelligence and autonomous control are not part of the original concept of the Internet of things. Ambient intelligence
Psychological effects of Internet use from a young age about the risks associated with cyber bullying. Children use, on average, 27 hours of internet a week and it is on the increase. This leads to an increased risk of insomnia. "A psychologist, Aric Sigman, warned of the perils of “passive parenting” and “benign neglect” caused by parent's reliance on gadgets". In some cases, parents' internet addictions can have drastic effects on their children. In 2009, a three-year-old girl from New Mexico died of malnutrition and dehydration on the same day that her mother was said to have spent 15 hours playing World of Warcraft online.