these are the main wireless connections
IR (infrared connection)
Wi-Fi (short for "wireless fidelity") is the popular term for a high-frequency wireless local area network (WLAN). The Wi-Fi technology is rapidly gaining acceptance in many companies as an alternative to a wired LAN. It can also be installed for a home network. Wi-Fi is specified in the 802.11b specification from the Institute of Electrical and Electronics Engineers (IEEE) and is part of a series of wireless specifications together with 802.11, 802.11a, and 802.11g. has lots of advantages such as being able to be connected to the internet. the but the disadvantages such as it only has a certain range and there are no test of long terms of effects on the human body so it could seriously affect someones health.