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New system detects emotions based on variables ranging from typing speeds to the weather.
Swapping software can give one GSM phone the power to prevent incoming calls and text messages from reaching other phones nearby.
Research shows how much the NSA could glean from call records, and why efforts to downplay the significance of such metadata are misleading.
The advance could lead to motion sensors showing up in running shoes and tennis rackets.
Mobile-phone activity can provide a warning of disease flare-ups.
A startup’s new technology will let smart phones recognize objects by mimicking the human visual system.
The technology is becoming ubiquitous—but don’t expect to be able to call just anyone.