In 2015, there were roughly 650 million Wi-Fi enabled devices, excluding personal computers and cell phones. By 2021, that number is likely to double. At the same time, new wireless standards are being developed that offer advantages for specific use cases. For instance, the wireless standard you use to stream 4K TV is different from the one used to dim smart light bulbs. But, though they are different, they share one thing in common. All wireless technologies rely on radio waves to transmit data through the air.
