Skip to main content

Posts

Showing posts from June 29, 2013

Researchers See Through Walls With 'Wi-Vi'

Want X­ray vision like the man of steel? A technology that lets you see behind walls could soon be built in to your cell phone.

MIT professor Dina Katabi and graduate student Fadel Adib have announced Wi­Vi, a demonstration of a technology that uses Wi­Fi to allow a viewer to "see" a person moving behind a wall. (Wi­Vi stands for "Wi­Fi" and "vision.")

Previous work demonstrated that the subtle reflections of wireless inter signals bouncing off a human could be used to track that person's movements, but those previous experiments either required that a wireless router was already in the room of the person being tracked, or "a whole truck just to carry the radio," said Katabi.

The new device uses the same wireless antenna as is found in a cell phone or laptop and could in theory one day be embedded in a phone. [See also "WiSee Detects Your Gestures Using WiFi."]

The trick is canceling out all interfering signals – Wi-Fi doesn't just…

China media warns Philippines of 'counterstrike' in South China Sea

BEIJING (Reuters) - China's state media warned on Saturday that a "counterstrike" against the Philippines was inevitable if it continues to provoke Beijing in the South China Sea, potentially Asia's biggest military troublespot.

The warning comes as ministers from both countries attend an Association of Southeast Asian Nations meeting in Brunei, starting Saturday, which hopes to reach a legally binding code of conduct to manage maritime conduct in disputed areas.

At stake are potentially massive offshore oil reserves. The seas also lie on shipping lanes and fishing grounds.

Both China and the Philippines have been locked in a decades-old territorial squabble over the South China Sea, with tensions flaring after the Philippines moved new soldiers and supplies last week to a disputed coral reef, prompting Beijing to condemn Manila's "illegal occupation".

The overseas edition of the People's Daily, the official newspaper of the Chinese Communist Party, sai…