Wi-Fi is everywhere these days. We use it on laptops at home and in coffee shops, on tablets in airports and hotels, on phones to save money when viewing video, on TVs if we’ve cut the cord with our cable or satellite TV service and don’t otherwise have a corded connection, and elsewhere.
Short for wireless fidelity, Wi-Fi is a wireless networking technology based on radio waves. Devices connect to the Internet over the air instead of through a physical cable. Like digital technology in general, Wi-Fi gives us more freedom and power.