Ultrawideband is faster, uses less power, but is immature and lacks infrastructure
Wifi-enabled card can beam photographs to a computer or website
Faster version of DECT technology offers high-quality voice calls in clean spectrum
First generation products fight for airspace because they can't use extra spectrum
Notebooks using faster wireless links will launch at same time as Vista
One of three Sandisk devices launched at CES in bid to break into convergence market
Public access to Wifi points can be awkward and expensive. Nigel Whitfield looks at setting up one at home
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