Quick tech tip: take 20 minutes today to check your router. Your router is the front door for your home or small-business network, and a few basic settings can prevent a lot of trouble later. This is not about turning.
German researchers at KIT showed that ordinary Wi-Fi signal behavior can identify people with very high accuracy in controlled tests. Here is what it means for home users, small businesses, and Wi-Fi privacy.
A separate guest Wi-Fi network lets visitors get online without giving out the main password used by business computers, phones, printers, cameras, and private devices.