Wireless 'tooth tattoo' detects harmful bacteria

Using silk strands pulled from cocoons and gold wires thinner than a spider's web, researchers at Princeton University have created a removable tattoo that adheres to dental enamel and could eventually monitor a patient's ...

IREX latest entrant in US e-reader field

Dutch company IREX Technologies, a spinoff of Royal Philips Electronics, unveiled a new electronic reader for the US market on Wednesday, the latest entrant in an increasingly crowded field.

Nexus One gets touch and 3G capabilities

Google is ramping up its entry in the hotly competitive smartphone race by adding "pinch-to-zoom" multi-touch and 3G wireless broadband network capabilities to the Nexus One.

Raytheon turns iPhones into battlefield tools

US defense contractor Raytheon on Wednesday unveiled the first of what it said will be a series of software applications to make iPhones or iPod touch devices into battlefield tools.