People love Wi-Fi access to the Internet. More and more, they are using the wireless connection technology at Starbucks caf¿s, in airport lounges and at home. Wi-Fi seems irresistible because it makes the Net available to users anytime, anywhere. It provides fast communications links that allow e-mail messages to appear almost instantly and Web pages to paint computer screens quickly--all with the mobility and freedom that has made cell phones nearly ubiquitous.