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Submission + - Hong Kong protesters use a mesh network to organise (newscientist.com)

wabrandsma writes: from New Scientist:

Hong Kong's mass protest is networked. Activists are relying on a free app that can send messages without any cellphone connection.

Since the pro-democracy protests turned ugly over the weekend, many worry that the Chinese government would block local phone networks.

In response, activists have turned to the FireChat app to send supportive messages and share the latest news. On Sunday alone, the app was downloaded more than 100,000 times in Hong Kong, its developers said. FireChat relies on "mesh networking", a technique that allows data to zip directly from one phone to another via Wi-Fi or Bluetooth. Ordinarily, if two people want to communicate this way, they need to be fairly close together. But as more people join in, the network grows and messages can travel further.

Mesh networks can be useful for people who are caught in natural disasters or, like those in Hong Kong, protesting under tricky conditions. FireChat came in handy for protesters in Taiwan and Iraq this year.

Networking

Submission + - Smallest storage space? The nucleus of an atom (networkworld.com)

bednarz writes: "Scientists have demonstrated what is being called the "ultimate miniaturization of computer memory," storing data for nearly two seconds in the nucleus of an atom. This is a key step in the development of quantum computers, according to the National Science Foundation. Using a new technique, an international team of scientists demonstrated that information stored in the nucleus has a lifetime of about 1 ¾ seconds, the NSF http://www.nsf.gov/news/news_images.jsp?cntn_id=112538&org=NSF says. "This is significant because before this technique was developed, the longest researchers could preserve quantum information in silicon was less than one-tenth of a second. Other researchers studying quantum computing recently calculated that if a quantum system could store information for at least one second, error correction techniques could then protect that data for an indefinite period of time.""

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