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What Your Photos Know About You (itworld.com)

itwbennett writes: Sandra Henry-Stocker became curious about how much more complex the jpg format had become since she first did a deep dive into it more than twenty years ago, so she dug into how much information is stored and where. "This information is quite extensive — depending on the digital camera you're using," says Henry-Stocker, "containing detailed information about the photo such as the make and model of the digital camera that was used, whether a flash was used, the focal length, light value, and the shutter speed that was used when it was taken. And, if your phone/camera has geotagging turned on, it will also include the altitude, longitude and latitude of the place where the photo was taken." Henry-Stocker used exiftool to extract and label the data so you can see what is collected, and how you can protect your privacy as well as your intellectual property.

13 of 109 comments (clear)

  1. Thanks, we know. by Anonymous Coward · · Score: 5, Informative

    Thanks, we know.

    1. Re:Thanks, we know. by 93+Escort+Wagon · · Score: 4, Informative

      Thanks, we know.

      No kidding. The EXIF data intentionally contains all that information! And it's really useful to a photographer!

      --
      #DeleteChrome
    2. Re:Thanks, we know. by lazarus · · Score: 2

      It's not like nerds created the standard or implemented it in software and hardware...

      --
      I am not interested in articles about life extension advancements.
  2. Can someone explain by tomhath · · Score: 5, Insightful

    How is this News for Nerds? It is common knowledge.

    1. Re:Can someone explain by dstyle5 · · Score: 4, Funny

      Coming soon on Slashdot, a story about how to "stream" movies and TV shows via a web site called "The Netflix". Watch out cable TV service providers, this thing just might catch on!

    2. Re:Can someone explain by WoOS · · Score: 2

      Come on. EXIF arrived only lately on the scene .... around 1995. Obviously Nerds would not know about something that new .... or at least the editors wouldn't.

      Slashdot, News for Nerds, Edited by Jocks.

      Can an editor please retract this article. This is a disgrace for this site!

    3. Re:Can someone explain by ultranova · · Score: 2

      Or IMHO, they tried to inject social and political awareness into the site and a large number of their users lost interest and left.

      Slashdot was always about "stuff that matters", including politics and social issues. In fact those stories always got the greatest amounts of comments. It's just become fashionable to pretend you're a victim because you're no longer allowed to victimize others, and that causes a lot of noise, that's all.

      --

      Forget magic. Any technology distinguishable from divine power is insufficiently advanced.

  3. Hey great news! by Ecuador · · Score: 4, Funny

    That means I can actually use some sort of extra data, let's call it "meta" data from now on, to manage my photos! Imagine if in the future they could store extensive details like even the temperature of the sensor! I know I am making things up now, but perhaps it would be convenient for example on some sort of futuristic long exposure technique where you would need dark calibration frames.

    Can't wait for tomorrows news for nerds, where Mandy George-Shelley after twenty years takes another look at the mouse and discovers a second button which can do so many things, but can be a privacy concern if you right-click the wrong things...

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    Violence is the last refuge of the incompetent. Polar Scope Align for iOS
  4. Shock, Horror! by tomthepom · · Score: 2

    Looks like someone has just discovered EXIF / IPTC / XMP!

    This is a known issue, most social sites, including Facebook, Twitter and Instagram, strip all data, though they may use the title and copyright fields for naming the photo.
    And the more specialized photo sharing sites like Flickr and 500px give you various levels of control over the privacy of photo metadata.

  5. remove the info if you mind it by vyvepe · · Score: 2

    for a in *.jpg; do convert -strip "$a" "$a:r.clean.$a:e" ; done

  6. Re:OMG! What can we do!? by Technician · · Score: 2

    LAT and LON data has been used to steal items listed on Craigslist or Ebay. Got a snowmobile or quad for sale? Got a really cute pet or child. It may be a good idea to use a camera without a GPS instead of your cell phone.

    I've looked at some photos on the web to see where they were taken.

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    The truth shall set you free!
  7. Next up: your phone has all your secret info by mveloso · · Score: 2

    Next in the series: your phone has your email, phone calls, and even text messages on it. And pictures! And it knows where you are, like a small spy who follows you around constantly.

  8. Re:*** EXIF Data is Too Revealing *** by Cederic · · Score: 2

    Moreover, I disallow anyone, family or friend, to post photos of my family, adults or children, online where anyone can see them

    Sure. Good luck with that one.

    I shoot street and I promise you, I've asked permission from none of the thousands of people I've put online. Don't need to, don't care.