<http://schema.org/articleBody>
"You&amp;#039;ve probably heard and even use these terms everyday but do you really understand what they mean and how they affect you? Here&amp;#039;s a rundown of the different types of wireless signals. WiFi: This signal is accessible only within short range of a WiFi transmitter and is primarily used for hopping on the internet. Most computers, smartphones, and tablets can access WiFi which provides an internet signal much faster than most cellular connections. WiFi is available in public locations like Starbucks, airports, and in your home if you&amp;#039;ve had &amp;quot;wireless internet&amp;quot; installed. If you&amp;#039;re on an unsecured network however, like the ones in public spaces, note that the information you send or receive isn&amp;#039;t private so try not to do banking transactions in such cases. Make sure you protect your home WiFi connection with a password. Bluetooth: A short range cellular signal put out and received by your phone, bluetooth transfers voice and other information, for very short distances. Many cars now have internal bluetooth connections that sync your phone to your car. This way, your phone and car can exchange information from your phonebook, music playlist, or voice-calls without being wired in. Cellular 3G/4G: We&amp;#039;ve been using this for years to make phone calls. Now, networks are robust enough to support a large transfer of information (3G is much faster than older signals, and 4G is even faster). Data can be exchanged anywhere a cell signal is available. The signals come from cell towers or sites, sometimes even located on building roofs. RFID: This stands for radio frequency identification and is used to transfer very small amounts of stored information, like the number for your EZ-Pass or touch-and-go credit card tag. Credit card tags like PayPass broadcast information such as your credit card number but only an inch or so away. Infrared: Infrared signals are a line of sight signal used for things like remote controls on televisions. You&amp;#039;ll notice infrared signals are directional, but reflective so you can bounce your TV remote off a wall and have it still change the station. Check out reviews of electronics from the Good Housekeeping Research Institute or schedule a tour here. For help recycling old electronics visit the Daily Green. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/institute/a2013/all-about-wireless-signals/>