Protecting images
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You may want to check out this software that will encrypt your images - http://www.artistscope.com/secure_image/demo0.htm
This program will not allow:
Saving from the web page and contents with mouse and browser commands.
Site and file grabbers, search and spider programs.
From browser cache or the Temporary Internet Folder.
Screen capture programs and PrintScreen.
Piracy and redistribution of server hosted files.
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There is the option of using photoshop's digimarcs in your images. This basically embeds copyright information into your images. It won't stop people stealing your images, but whenever they are opened, it will display your copyright information.
It works by slightly changing the brightness of some of the pixels in the image (unoticeable to the human eye) which photoshop can read.
check it out at - http://www.digimarc.com/
Mark
This program will not allow:
Saving from the web page and contents with mouse and browser commands.
Site and file grabbers, search and spider programs.
From browser cache or the Temporary Internet Folder.
Screen capture programs and PrintScreen.
Piracy and redistribution of server hosted files.
---------------------------
There is the option of using photoshop's digimarcs in your images. This basically embeds copyright information into your images. It won't stop people stealing your images, but whenever they are opened, it will display your copyright information.
It works by slightly changing the brightness of some of the pixels in the image (unoticeable to the human eye) which photoshop can read.
check it out at - http://www.digimarc.com/
Mark
- twigletmac
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Print Screen allowed me to capture the image they were using as a demo...Bech100 wrote:You may want to check out this software that will encrypt your images - http://www.artistscope.com/secure_image/demo0.htm
This program will not allow:
Screen capture programs and PrintScreen.
If methods like this worked they would be widespread, they don't work... They just annoy your users - java applets just to see an image...
Mac
oops, that was the wrong link
This is the one that disables print screen (and everything else) - http://www.artistscope.com/copysafe/
It works cos user of the website have to install a plug-in to view the images.
It is actually very good, but may intimidate the user because it disbales all the IE Toolbars, the Windows Quick Launch and stuff like that (only whilst viewing a protected image tho).
Mark
This is the one that disables print screen (and everything else) - http://www.artistscope.com/copysafe/
It works cos user of the website have to install a plug-in to view the images.
It is actually very good, but may intimidate the user because it disbales all the IE Toolbars, the Windows Quick Launch and stuff like that (only whilst viewing a protected image tho).
Mark
Last edited by JayBird on Fri Sep 12, 2003 4:52 am, edited 1 time in total.
- twigletmac
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Yup, maybe, but you can't have everything, there has to be some give and take.twigletmac wrote:Sounds like a very effective method to stop your images getting stolen - users just leave your site without bothering to look at them. Plus I wouldn't be surprised if there was a way around it.
Mac
I have done a website for an art gallery before, and all i did was show the images at a low enough resoution so they were good to view on screen but nothing else, and watermark them with the web address. This way, if anyone did steal the images, the gallery would maybe get some free traffic.
Mark
that's the best thing you can do.Bech100 wrote:Yup, maybe, but you can't have everything, there has to be some give and take.twigletmac wrote:Sounds like a very effective method to stop your images getting stolen - users just leave your site without bothering to look at them. Plus I wouldn't be surprised if there was a way around it.
Mac
I have done a website for an art gallery before, and all i did was show the images at a low enough resoution so they were good to view on screen but nothing else, and watermark them with the web address. This way, if anyone did steal the images, the gallery would maybe get some free traffic.
Mark
as twig said, the disabling is annoying at best. on top of that, anything i've seen that's even a plug in to disable is normally half cicked. the plug ins work in netscape to let you see, but not disable, or they do it all in netscape and not ie
and if they get those two they miss opera , galeon, etc (someone that reallllly wants it will look for other browsers if they aren't on linux in which case they know of and/or use them already)
i've yet to see someone use javascript to disable in bot netscape and ie... yet that's killed simply by turning off javascript.
the closest i've seen to using javscript in bot, netscape just gave the warning then let you right click.
i was looking for stuff for this for a sitre for a friend a few years back... nothing i've seen stops looking at the page source..
what i came up with was a javascript deterrent... it was in a single frame (page source doesn't work) that used javascript to make sure it's always called in the frame and to disable in ie and annoy in netscape. had the friend put tags someplace prominent and said i did hte best i could to stopping everything but printscreen, which as far as i knew then was impossible. somehow i doubt that program really stops it, and even if it does, we're right back at what twig said: most people don't like tohave to add plug ins, if it's not in a wide distribution it's more likely they'll go elsewhere than install the plug in.
recently, with all the trojans/viruses/worms people have been less likely to dl and install plug ins that haven't been around for a long while.. and some that have wont be anymore: ie comet cursor was shown to have been hacked into and had a trojan embedded by a hacker so for a week or so everyone installing or updating put it on.
most ppl i know stopped uing that.
i never did to begin with. right now the only plug ins i know ppl will actually use are quicktime, anything adobe, anything macromedia
those four things i'm thinking of in particular (quicktime, acrobat, shockwave, flash) have ben around long enough and are in wide enough use that people have come to trust the companies, and since they have been great in keeping their products relatively bug free, they can introduce new products.
if one of them add the printscreen kill (which i doubt works) then there's going to be a feasable option.
otherwise, you're choice are open it to be stolen or don't display.
also, there's two other things you can do with php... one is to have it dynamically made, that is a deterrrent because each one has the same name, the other one well.. here's the code for it:
Code: Select all
$fh=fopen($file,'r') or die("cannot open $file: $php_errormsg"); // get a filehandle
$filetype=fread($fh, filesize($file)); // get the filetype? read the file (filehandle, file's size)
fclose($fh); // close the file handle
echo $filetype; // display the file?they can't get the location, if you use the javascript deterrents you can block page source viewing and right clicking when it's on (there's gotta be a way to cover both netscape and ie correctly, if ot opera and galeon etc as well)
all that you can do is make a deterrent that's good enough to make most not dl it while letting ppl see it
It does work, i actually installed the demo plugin, and tried numerous ways with the printscreen button and other screen capture programes. i couldn't get the image, all that was captured was a blank image.m3rajk wrote: if one of them add the printscreen kill (which i doubt works) then there's going to be a feasable option.
Anyway, im not saying that this is an option, just saying that it is an option (not one i would use though).
Mark
Yah, common thing dealing with for example mediaplayers, playing .avi/.mpg's. Some years ago I was trying to take a screenshot from a movie, but the image was blank.Bech100 wrote: all that was captured was a blank image.
Now, some players has that particular screenshot function (PowerDVD as example), but again, there are also other screencap software that still are able to pass by the "blank-image" syndrome.
I'd vote for the watermark described earlier..
- Vincent Puglia
- Forum Commoner
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- Joined: Thu Sep 04, 2003 4:20 pm
- Location: where the World once stood
Hi,
Glancing only at the 2nd page of this thread, I gather the topic is protecting from 'piracy'
This:
Vinny
Glancing only at the 2nd page of this thread, I gather the topic is protecting from 'piracy'
This:
is the only 'real' statement I saw. If I'm looking at something with my browser on my machine, I can take it -- sooner or later.If methods like this worked they would be widespread, they don't work...
Vinny
-
Cruzado_Mainfrm
- Forum Contributor
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hey, i just noticed that you can, instead of specifying a flash .swf file instead you specify a .jpg image, and it will show like if it were flash, and if you lower the quality by using the flash menu, u will see it get more smooth, mid-smooth, or not smooth at all. Use the same code that you will use to embed a flash, just change the source to a jpeg image.
Open the demo page in PC1 view PC2 with VNC and press print screen on PC2 you can get the image. remember while pressing print screen don't keep the vnc windows as an active window.JayBird wrote:It does work, i actually installed the demo plugin, and tried numerous ways with the printscreen button and other screen capture programes. i couldn't get the image, all that was captured was a blank image.m3rajk wrote: if one of them add the printscreen kill (which i doubt works) then there's going to be a feasable option.
Anyway, im not saying that this is an option, just saying that it is an option (not one i would use though).
Mark
If you can disable JavaScript then you can press print screen I think.
remember you can Inject Javascript with apatana addon on mozilla.
You get get the Image from the browser cache.
Last edited by nwp on Sun Aug 12, 2007 12:39 pm, edited 1 time in total.