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According to some the term WiFi comes from a play on the older term HiFi. Alternatives to the spelling of WiFi include Wi-Fi, or in lower case Wifi and wi-fi. A WiFi connection may be between two or more computers and can involve equipment such as the Wireless Access Point, Wireless Router, Wireless Access Cards, or other Wireless Radios, but does not generally include other types of packet radios.There are many WiFi embedded devices on the market today. They include the personal computer, video game consoles, mobile phones, MP3 players or the personal digital assistant. WiFi can be used to established private network links, public access hotspots, or as part of a paid subscription service such as a way to provide Internet Service to a location.