History of IOT

 It has long been practice for people to place devices (things), gather information, and send signals from one point to another. In previous war times, when enemies would approach a kingdom, people on watch would set off a series of signals via flames or sounds to communicate with the decision makers that a threat was on the horizon.

Over time, institutions have used sensors, or small devices, but the technology that allowed the sensors to report back to a central service was through something like walking, fires, radio signals, cables, or, possibly, satellite. Now, the internet is the primary service on which all these sensors are able to communicate information back to its host.

The internet is abundant and easy to usie. With a framework like this, it does not take as many resources to place a data-collecting device somewhere in the world and retrieve information from it. Signaling devices can grow in variety, beyond their mostly utilitarian purposes, and provide signals for many different use cases.

For example, weather alert systems are now very sophisticated. They monitor a region’s natural disasters, warning of oncoming earthquakes, tsunamis, hurricanes, tornadoes, and floods. After Colorado’s Big Thompson Flood, in 1976, a series of signals were installed to monitor the river elevations and communicate to the people living nearby when the river was dangerous. Similarly, most large United States cities now have sensors to signal to authorities when and where a gun was fired.

Today, we enter an era of small devices connected through the internet. The society known as the Internet of Things can grow rich as it moves into an era of pleasure and delight. Now, rather than having to walk to the rain gauge or answer the door in person or through an intercom, the rain gauge and the doorbell can be connected to the internet and send signals to a person’s phone