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Thread: Web image protection

  1. #1
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    Default Web image protection

    I would like to have your feedback and opinion of the simple protection method I just created to protect image on the web, it doesn't require plug-in, very simple and effective. Altough it is not 100% bulletproof, but at least it will prevent average people from copying the image.
    You can try on my test server here:
    http://202.172.43.18/test.php

    (please be patient, this server is a bit slow)

  2. #2
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    interesting idea. the images are still downloaded onto the browser's cache though
    Check out my wildlife pics at www.instagram.com/conrad_nature

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    Good attempt - I like the idea of "listening" for keystrokes and using a transparent gif to cover the original image.

    But I guess there're always ways to work around it.

    Here's a screen capture:


    Click here if it doesn't load.
    Last edited by imaginary_number; 19th April 2003 at 09:55 AM.

  4. #4
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    Tested it. Seem to work well. Even when I click on save when the 4 icons popped up, all it does is save a blank layer. Great!!

  5. #5

    Default Re: Web image protection

    Originally posted by tsdh

    but at least it will prevent average people from copying the image.
    unless above average people post here how the average person can beat it

  6. #6
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    Yes, very easy to overcome it, but it will deter those who are less techie-knowledgable.

    I think most of us here although know how to over-come it will not choose to do so

    It's the minority.

    I've seen I think SniperD's or togu's shots being leeched onto www.sggirls.com those are the blacksheep among us.

  7. #7
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    Yes, it is just a simple idea, quite easy for those knowledgeable. But those group of well knowledgeable will not many belong to the leechers. (... the less-knowledgeable will still be able to steal, by shooting the monitor screen using digicam .. )

    some of my images were stolen too ,that's why now I almost never put my images on the website, and completely take down all images (especially portraitures) which involves other people.

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    Originally posted by mpenza
    interesting idea. the images are still downloaded onto the browser's cache though
    yeah, it is still in the cache. The only way to avoid this, by using a Java applet instead of just a plain HTML, but it will take longer time to download.
    The only unbeatable cracking method are:
    - Grabbing the screen memory directly, or from the output using video capture.
    - Shooting the monitor screen using camera.

  9. #9

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    here's another idea:

    1. have a Flash movie on your website.
    2. when the user clicks on a thumbnail, send a request to a server-side script, and return the binary data of the image.
    3. have Flash load the image as a new movie clip.

    I'm in the midst of writing something of the above for my own site. Will post the url once it's complete.

  10. #10
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    Originally posted by munfai
    here's another idea:

    1. have a Flash movie on your website.
    2. when the user clicks on a thumbnail, send a request to a server-side script, and return the binary data of the image.
    3. have Flash load the image as a new movie clip.

    I'm in the midst of writing something of the above for my own site. Will post the url once it's complete.
    That sounds rather feasible. Keep us updated!

    Regards
    CK

  11. #11

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    Originally posted by munfai
    here's another idea:

    1. have a Flash movie on your website.
    2. when the user clicks on a thumbnail, send a request to a server-side script, and return the binary data of the image.
    3. have Flash load the image as a new movie clip.

    I'm in the midst of writing something of the above for my own site. Will post the url once it's complete.
    Can show an example of the binary data thing?
    I can understand the rest of the stuff..

  12. #12
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    Originally posted by munfai
    here's another idea:

    1. have a Flash movie on your website.
    2. when the user clicks on a thumbnail, send a request to a server-side script, and return the binary data of the image.
    3. have Flash load the image as a new movie clip.

    I'm in the midst of writing something of the above for my own site. Will post the url once it's complete.
    That's good idea, but the browser has to support Flash.
    And I don't know whether the binary data can be encrypted with Flash, if it is still in its original binary (or standard movie clip), then can be easily intercepted too.
    Later I will try using a Java applet instead of Flash.
    Similar as your idea, the Applet will request to a server-side script, which return encrypted binary data of the image.

  13. #13
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    My 2 cents worth:
    Flash is actually very well supported. My question is can Flash handle real encryption; not some half-a$$ ones like XOR, but just even DES.

    I actually have in mind something similar but requires SSL. I will have to try to crack it first myself

  14. #14

    Default Re: Web image protection

    Originally posted by tsdh
    Altough it is not 100% bulletproof, but at least it will prevent average people from copying the image.
    IE 6: works as expected.
    Netscape 4.7x: window closes as soon as I click on another window.
    Opera 6: no effect.

    You might want a footnote to say that Javascript must be enabled.

    There are times when the popped up window shows exactly the same page. I need to click again to get to the image. Sometimes not. I noticed the main page refreshes itself, so it could be due to some sync problem -- I'm using a 56k dial-up.

    However, imo, what's the point? Images 640x480 or less are not worth protecting. They cannot be printed well.

    I have a bigger problem of getting people to see my images!
    (void *) &NHY;

  15. #15

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    why not just watermark your images,
    it actually more troublesome doing it this way.
    get the digimarc plugin for photoshop.

    its virtually transparent, and it watermarks phrintouts too.
    most ad companies use this.


    it does degrade picture quailty, but very little, and not noticable to the human eye. unless you really squint at it

  16. #16
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    Originally posted by Barret
    why not just watermark your images,
    it actually more troublesome doing it this way.
    get the digimarc plugin for photoshop.
    Watermarking is the best, considering that we can never prevent stealing of web-images. The only problem is: I have to pay US$49 for max 100 images every year to Digimarc, this is a running cost which may not worth for me as an amateur.

  17. #17
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    Default Re: Re: Web image protection

    Originally posted by nhyone
    There are times when the popped up window shows exactly the same page. I need to click again to get to the image. Sometimes not. I noticed the main page refreshes itself, so it could be due to some sync problem -- I'm using a 56k dial-up.
    Yes, you're right. The popped up window sometimes show the main page due to the out of sync session, or if the referer main page come from the browser's cache while its session has actually expired.

    However, imo, what's the point? Images 640x480 or less are not worth protecting. They cannot be printed well.
    I have a bigger problem of getting people to see my images!
    Sure, it is too much to protect 640x480 images. But the goal is to prevent somebody get the original web-file easily. (right-click or shift-print-screen, are too easy). By putting a bit of protection measures, it will discourage people from stealing images, altough it would not stop the real crook.
    Nowaday I notice that most of people think that it is allright to save a web-image they find appealing, and use it for their interest (as windows wallpaper, send by email to friends, etc). Their awareness regarding copyright issue is virtually not there, especially while it is too easy to get the image.

  18. #18

    Default Re: Re: Re: Web image protection

    Originally posted by tsdh
    Nowaday I notice that most of people think that it is allright to save a web-image they find appealing, and use it for their interest (as windows wallpaper, send by email to friends, etc).
    Well, there is such a thing as fair-use. I would rather have my images spread wide and far. Put a copyright message on your images and tag them properly. Leech is simple and fast, but most casual users won't bother to do an edit.
    (void *) &NHY;

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