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4 Comments

  1. David Riecks

    Alex is correct. Many image sharing / social media systems “strip” the metadata at the point the image is uploaded, as they are resampling/resizing the image and only retain the pixel data. The photo metadata working group* of the International Press Telecommunications Council (a standards body behind two of the most used photo metadata schemas) conducted a survey in 2013 testing how Social Media sites manage metadata embedded within images uploaded to their sites and here is what they found: http://embeddedmetadata.org/social-media-test-results.php

    That’s the reason why they launched the Embedded Metadata Manifesto…. and posted the results on that site.

    David
    *I am a member of the working group and assisted with the survey, which grew out of a longer survey started in 2009 at http://www.controlledvocabulary.com/socialmedia

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  2. Steve

    I’m currently reading the fantastic book “Future Crime” and he describes how the next big race worth billions of dollars is to capture location data. Such that users of services can be located both historically and real-time which has value to advertisers and others. Metadata from pictures is a big part of that. The data is super valuable and most TOS (Terms of Service) give ownership of metadata (and anything else you upload) to the social media service. It’s an unspoken payment for the “free” service and how they generate revenue. So it may be stripped, but it lives on in a database and is sold downstream. And often ends up in the hands of criminals.

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