Demo Spring 2011: Start-ups Tap Social Networks for Search and Shopping

Social search, social shopping, social CMS; startups are fashioning tools from social media data

3 min read
Demo Spring 2011: Start-ups Tap Social Networks for Search and Shopping

Remember about 10 years ago, when accurate GPS data became available to consumers? It launched a boom in previously unimaginable location-based devices and applications; and now we take for granted that our mobile gizmos know where we are.

Listening to the 60-some startup company executives present their brand-new technologies at Demo Spring 2011, it became clear that a new data stream is kicking off a new wave of engineering creativity. This time, the data is not coming from a satellite in the sky—it is coming from servers in the cloud; specifically, Facebook, Twitter, and Linked In, along with contact lists from Gmail and other online services. And it won’t be long, it seems, before assume all the computing gizmos we use know who we like to communicate with.

Over the past few years, while we’ve been using these online services to track friends and colleagues, they’ve been tracking us—who we know, who we communicate with the most, who and what we are most interested in. And that data can be used all sorts of ways.

Take search. Now social search is not a new idea; I’ve watched companies for years pitch websites that offered social search—you register, do your search on that website, and then you can send the results of your search to friends and colleagues, so if they’re interested in the same topic they can save time by piggybacking on your efforts. Not a bad idea, but also not surprising that none of these efforts really took off; the going to a special site, the registering, the identifying folks who might be interested, the sending the search results out—way too much trouble.

But suddenly, with the wide availability of social data, the barriers to social search essentially disappear, and, this time, it might just catch on.

That’s what several companies introducing at Demo Spring 2011 hope, anyway.

HeyStacks imports your social contacts from various sources, and lets you piggyback on their web browsing history to find improve your search experience—the company says its great for getting travel search results to move beyond the big web sites and find more hidden gems.

Marginize presented a web-browser plug in that instantly adds social data to websites—when you go to a site, you can click onto a button to see what people are saying about that site, rather than separately going to Twitter or Facebook.

Then there’s Social Shopping. Doug Mack, CEO of One Kings Lane, a home décor shopping site, pointed out that early Internet shopping sites were designed by men, who tend to want shopping experiences that are fast and efficient, but many women shop differently, using shopping as an activity to do with friends. Two companies at Demo--Zugara and FaceCake Marketing Technologies presented new tools for online shopping; both let users easily share their potential choices to Facebook and Twitter to gather feedback from their social networks.

And Social CMS. Nimble Social Relationship Manager takes social data from Facebook, Twitter, and Linked In, adds your email and calendar information, and

maps it all into a contact management system for business, so you can not only monitor your interactions with a potential customer, but also keep track of what that customer is doing and saying elsewhere. The company intends it for business use, but with all this online socializing going on, it won't long before many of us need something like this for personal use as well (put it on a mobile device, and I can stop asking people who I run into at the store, "how do I know you?").

Photo: Marginize adds a social stream to the IEEE Spectrum web page.

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Metamaterials Could Solve One of 6G’s Big Problems

There’s plenty of bandwidth available if we use reconfigurable intelligent surfaces

12 min read
An illustration depicting cellphone users at street level in a city, with wireless signals reaching them via reflecting surfaces.

Ground level in a typical urban canyon, shielded by tall buildings, will be inaccessible to some 6G frequencies. Deft placement of reconfigurable intelligent surfaces [yellow] will enable the signals to pervade these areas.

Chris Philpot

For all the tumultuous revolution in wireless technology over the past several decades, there have been a couple of constants. One is the overcrowding of radio bands, and the other is the move to escape that congestion by exploiting higher and higher frequencies. And today, as engineers roll out 5G and plan for 6G wireless, they find themselves at a crossroads: After years of designing superefficient transmitters and receivers, and of compensating for the signal losses at the end points of a radio channel, they’re beginning to realize that they are approaching the practical limits of transmitter and receiver efficiency. From now on, to get high performance as we go to higher frequencies, we will need to engineer the wireless channel itself. But how can we possibly engineer and control a wireless environment, which is determined by a host of factors, many of them random and therefore unpredictable?

Perhaps the most promising solution, right now, is to use reconfigurable intelligent surfaces. These are planar structures typically ranging in size from about 100 square centimeters to about 5 square meters or more, depending on the frequency and other factors. These surfaces use advanced substances called metamaterials to reflect and refract electromagnetic waves. Thin two-dimensional metamaterials, known as metasurfaces, can be designed to sense the local electromagnetic environment and tune the wave’s key properties, such as its amplitude, phase, and polarization, as the wave is reflected or refracted by the surface. So as the waves fall on such a surface, it can alter the incident waves’ direction so as to strengthen the channel. In fact, these metasurfaces can be programmed to make these changes dynamically, reconfiguring the signal in real time in response to changes in the wireless channel. Think of reconfigurable intelligent surfaces as the next evolution of the repeater concept.

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