A hotspot is a physical location where people may obtain Internet access , typically using Wi-Fi technology, via a wireless local area network (WLAN) using a router connected to an internet service provider.
Public hotspots may be created by a business for use by customers, such as coffee shops or hotels. Public hotspots are typically created from wireless access points configured to provide Internet access, controlled to some degree by the venue. In its simplest form, venues that have broadband Internet access can create public wireless access by configuring an access point (AP), in conjunction with a router and connecting the AP to the Internet connection. A single wireless router combining these functions may suffice. 
Private hotspots may be configured on a smartphone or tablet with a mobile network data plan to allow Internet access to other devices via Bluetooth pairing or if both the hotspot device and the device/s accessing it are connected to the same Wi-Fi network.
The public can use a laptop or other suitable portable device to access the wireless connection (usually Wi-Fi ) provided. Of the estimated 150 million laptops, 14 million PDAs , and other emerging Wi-Fi devices sold per year for the last few years, most include the Wi-Fi feature.
The iPass 2014 interactive map, that shows data provided by the analysts Maravedis Rethink, shows that in December 2014 there are 46,000,000 hotspots worldwide and more than 22,000,000 roamable hotspots. More than 10,900 hotspots are on trains, planes and airports (Wi-Fi in motion) and more than 8,500,000 are "branded" hotspots (retail, cafés, hotels). The region with the largest number of public hotspots is Europe, followed by North America and Asia. 
Here's how to make your iPhone, Windows Phone, or Android phone a Wi-Fi hotspot
If your Internet connection goes down, or you find yourself in a situation where a smartphone is your only connection to the web, turning it into a Wi-Fi hotspot will come in handy. The process is simple and straight-forward, but you still need to know where to go. Here's a look at how to set up a Wi-Fi hotspot on Android, iOS and Windows Phone.
On your phone go to Settings More Wireless & networks Tethering & portable hotspot. The exact menu names can vary slightly on some phones, but if you can get to the wireless settings section, that's generally where you need to be.
Next, you'll see a few different tethering options. Also the capability of giving your hotspot strong encryption in case you're in a public location. The Network SSID will default to AndroidAP but you can change that and a password to something that is secure but also easy to remember.
This method may require a tethering plan with your carrier – and it most definitely will if you live in the US. There are also lots of third-party apps in Google Play that will let you bypass a tethering plan, but you'll want to remember that they likely violate your wireless agreement with your carrier.
Wireless (or wi-fi ) hotspots are essentially wireless access points providing network and/or Internet access to mobile devices like your laptop or smartphone, typically in public locations. To put it more simply, they re places where you can take your laptop or other mobile device and wirelessly connect to the Internet; some devices and smartphones also act as mobile wi-fi hotspots.
Typical wi-fi hotspot venues include cafes, libraries, airports, and hotels.
More: Step by Step Wi-Fi Connection Tutorial
One more connection note: if the wi-fi hotspot network is encrypted or hidden, you would need to get the security key and/or SSID information from the hotspot service provider to be able to locate and properly establish the network connection. Also, before allowing you to use their Internet connection, most hotspots will require you to accept their terms and conditions (which will generally require you to be a decent, law-abiding Internet citizen).
Common Misspellings: hot spot, wifi hotspot
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