Your digital trail, in cyberspace and in public spaces

 Here are two recent privacy-related stories about how the digital trails we leave can be combined in surprising ways.

From the NYT a story about an artist who became a digital sleuth, to capture people working hard to take casual-seeming Instagram photos of themselves in famous locations.

This Surveillance Artist Knows How You Got That Perfect Instagram Photo. A tech-savvy artist unearthed video footage of people working hard to capture the perfect shot for Instagram. It is a lesson in the artifice of social media and the ubiquity of surveillance.  By Kashmir Hill

"The 24/7 broadcast that Mr. Depoorter watched — titled “Live From NYC’s Times Square!” — was provided by EarthCam, a New Jersey company that specializes in real-time camera feeds. EarthCam built its network of livestreaming webcams “to transport people to interesting and unique locations around the world that may be difficult or impossible to experience in person,” according to its website. Founded in 1996, EarthCam monetizes the cameras through advertising and licensing of the footage.

"Mr. Depoorter realized that he could come up with an automated way to combine these publicly available cameras with the photos that people had posted on Instagram. So, over a two-week period, he collected EarthCam footage broadcast online from Times Square in New York, Wrigley Field in Chicago and the Temple Bar in Dublin.

"Rand Hammoud, a campaigner against surveillance at the global human rights organization Access Now, said the project illustrated how often people are unknowingly being filmed by surveillance cameras, and how easy it has become to stitch those movements together using automated biometric-scanning technologies."

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From the Washington Post, a story about how data from health apps makes its way to advertisers and others, with device identifiers (e.g. with the identity of your phone...):

Health apps share your concerns with advertisers. HIPAA can’t stop it. From ‘depression’ to ‘HIV,’ we found popular health apps sharing potential health concerns and user identifiers with dozens of ad companies  By Tatum Hunter and Jeremy B. Merrill 

"several popular Android health apps including Drugs.com Medication Guide, WebMD: Symptom Checker and Period Calendar Period Tracker gave advertisers the information they’d need to market to people or groups of consumers based on their health concerns.

"The Drugs.com Android app, for example, sent data to more than 100 outside entities including advertising companies, DuckDuckGo said. Terms inside those data transfers included “herpes,” “HIV,” “adderall” (a drug to treat attention-deficit/hyperactivity disorder), “diabetes” and “pregnancy.” These keywords came alongside device identifiers, which raise questions about privacy and targeting."