A Guardian guide to metadata

Metadata is information generated as you use technology, and its use has been the subject of controversy since NSA’s secret surveillance program was revealed. Examples include the date and time you called somebody or the location from which you last accessed your email. The data collected generally does not contain personal or content-specific details, but rather transactional information about the user, the device and activities taking place. In some cases you can limit the information that is collected – by turning off location services on your cell phone for instance – but many times you cannot. Below, explore some of the data collected through activities you do every day

Panopticlick – A research project of the Electronic Frontier Foundation

How unique and trackable is your browser?

Is your browser configuration rare or unique? If so, web sites may be able to track you, even if you limit or disable cookies. “Fingerprinting” may prove a more robust tracking technology than cookies.

Panopticlick tests your browser to see how unique it is based on the information it will share with sites it visits.

The Web Cookie Is Dying. Here’s The Creepier Technology That Comes Next

Many Internet advertisers rely on cookies. The problem for marketers is that some users set their browsers to reject cookies or quickly extinguish them. And mobile phones, which are taking an increasing chunk of the Web usage, do not use cookies.

Advertisers and publishers are increasingly turning to something called fingerprinting. It allows a web site to look at the characteristics of a computer such as what plugins and software you have installed, the size of the screen, the time zone, fonts and other features of any particular machine. These form a unique signature just like random skin patterns on a finger.

Ghostery

Ghostery shows you the invisible web : cookies, tags, web bugs, pixels, beacons and companies interested in your activity. Then it helps you learn about those companies, so you can make informed decisions about what you are/aren’t willing to share, and control your online privacy.

After you’ve seen what’s tracking you, you can decide whether or not you want to block any or all of the companies in Ghostery’s library. Are there some marketers you trust, but others you’d rather turn away?

Meet The Real-Life Tracking Database That Could Include You

Cookies are tracking our online behavior for advertising purposes, but a company specializing in retail analytics called Euclid, Inc. is moving that concept into real world shopping experiences.

Euclid uses open WiFi access points to track shopper behavior across stores: It does this by collecting the MAC address of smart phones as they passively connect to open networks while people shop, anonymizing the data, putting it into a giant database that then recognizes the device when it goes near any other Euclid customer’s network.

Lightbeam for Firefox: find out who’s tracking you online

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