Wired

Wi-Fi officially launched 20 years ago, on September 15, 1999. There are many ways in which Wi-Fi might not have become ubiquitous, and instead HomeRF (home radio frequency) remained a competing standard. Had the Wireless Ethernet Compatability Alliance (WECA) chose to focus on just business connectivity, not "go-anywhere" connectivity, workers would have used "FlankSpeed" (a re-envisioned "Wi-Fi") at the office and HomeRF at home. It would be more difficult to bring work home with you. Neither an embattled FlankSpeed nor HomeRF could ever have been as cheap, or as pervasive, as Wi-Fi.

Cell phone signal boosters are powerful devices. Installed in a home or office, they can potentially amplify one signal bar into five. In rural areas with poor cell coverage, or in buildings where signals have trouble penetrating, they can be lifesavers, providing reliable access to communication networks and emergency services. But boosters also have a dark side: if misconfigured or poorly manufactured, they can knock out service for everyone who happens to be nearby. That’s why the Federal Communications Commission began regulating the devices in 2014.