Your handheld will connect to your cellphone with Bluetooth so it won't need a modem. A Bluetooth video camera was recently demonstrated. Soon you might clip a video camera on your lapel, a cellphone like the Ericsson 520 on your belt and webcast anywhere. Bluetooth uses frequency hopping in the 2.4 Ghz band. Unlike 802.11b, small chunks of spectrum continuously hop around the band many times a second, avoiding interference.
Voice commands run it.
Cell phones provide the backbone. The web on wheels is rolling out. Cerulic's VP Product Strategies, Nigel Ballard, is looking at his horoscope on an Australian WAP site. They're installing both 802.11b and Bluetooth access points in public building, airports, hotels and conference centers. Other wireless lan systems like 802.11b can be wiped out by Microwave ovens.