Apps like Universal Copy (https://play.google.com/store/apps/details?id=com.camel.corp.universalcopy&hl=en) can copy "not selectable text" from Android apps. How can one prevent this?
The app uses OS accessibility features to grab content from text fields. Can we add anything to manifest so this app can't copy texts?
I'm not at all an androit expert but the answer is probably no, you can't prevent text from being copied, and it's good if it is so.
Anyway, it's a very very bad idea.
Remember when there was scripts that tried to prevent images from being copied by intercepting the right mouse button click.
In fact it didn't prevent anything, since power users had other tricks to save the images by another way. It was just frustrating for lambda users.
Preventing whatever displayed text from being copied is the same sort of "protection". It's just annoying, without really preventing from anything.
You'd better to always keep in mind that, everything you send to the network and displayed can be stored, copied, modified and be further sent to anyone. It's true for music, it's true for photos, it's true for videos, and it's also true for simple text. The only good way to prevent a certain part of unwanted copies is with watermarking techniques.
Whether you like it or not, it's so. IF your work is really worth it, it will eventually end up available for free somewhere.
Give me a real true good reason to prevent your text from being copied, and I will immediately delete this answer.
Related
I have a personal website and I want to spice it up a bit while also learning some front-end.
An idea I had was that the cursor of my website would be a coffee instead of the default one, and anytime I click on any content, the coffee pours.
Any idea if this is possible and if so, what I need to do to implement it?
You can change the cursor using CSS - see https://www.w3schools.com/cssref/pr_class_cursor.asp and do something like
div {
cursor:url(myCoffeeJug.cur),auto;
}
You could then use Javascript to change the cursor shape (ie URL) when the user clicks in the div. You'd need to think how to change it back again after whatever operation the click triggers is complete.
Note that you can't do animations this way - but given that clicking on a div is likely to be quite a quick action, just switching to and back from a different icon might well be enough for what you want.
However this is perhaps not a great idea from the usability point of view. Web users are used to the basic types of cursor provided by browsers - overriding them may be cute, but it can also be confusing.
If your site is designed for 'ordinary' users looking for information or functionality (rather than for web designers, or as a showcase for your techniques), you're putting a small barrier in their way. Users who are not confident, or are new to all this, or non-neurotypical users may find it off-putting.
Hello I am developing a website on ASP.NET and while developing it I am also testing its behavior and changes. The problem I am facing is some times when I make change on .CSS file those changes does not appear on the browser even when I refresh it or rerun the project but when I run that project on different browser it began to show those changes. If it is a code related or browser related or IDE related please let me know. Thanks
Try hitting ctrl-F5 - that will force a re-load.
Unless you change the name of the css file or other resource, the browser can cache that information for months on end.
In fact, some utilities will even add say a dummy parameter to the linked css file - thus on each build the parameter is updated - and thus the browser will not use the older cached value (but, I not found a great working and easy to use utility that does this).
The other way? Empty your browser cache. So yes, the cache can be a REALLY nasty issue during development. And in fact it can be REALLY nasty when you update your site - users will not see say a modify css file, since it been cached, and with the same name, then users will not see new fixes/style changes or even even things like text alignment that you fixed in the css file.
As noted, in most cases, if you launch a page, then try hitting Ctrl-F5 (I think this works in most browsers). If that fails, then you have to in the browser re-set the cache (empty the cache), and then you see the new changes.
I wish had a better solution, and I wish one could just say:
Ok, please re-set ONE time for all past users - since they will often not see your changes - and you don't have much control with any real great ease to re-set the cached information. There are truck-loads, book sized articles in dealing with this issue, but sadly, there not really a great solution right now. If you want say things like cached css stuff to go away client side? Then you have to change the name of the css file - and that can be painful.
At least during development? Well, let the page load, then try Ctrl-f5 - that works well in most cases.
I am facing an issue of aria and accessibility aria labels.
That's my problem:
After opens a page, I need that the screen reader reads the title and then stop reading the rest of the page.
I need that the screen reader stops there, and just continue reading after the user uses TABS to navigate.
does anyone know if it is possible?
The screen reader user has complete control over how much information is read. They might have their settings so that nothing is read when the page is loaded except maybe the page title. Or they might have it set so the entire page is read. It's not something you can control, nor should you. It's very user specific.
Adding to the already existing answer:
Of course you could force something like this using aria notifiy (aka on page load aria notify page title, and that's it). this would lead to the screenreader getting interrupted, the page title getting announced and then silence until the user moves (or other notification arrives). But this kind of behaviour would be super confusing to blind people, as it is pretty unnatural.
I myself am blind and believe me: Blind people, especially NVDA or Jaws users (don't know about Window Eyes) have an entire scripting language at the ready if need be. They may choose to make your web page appear completely different for them than it appears for others, react in different ways - and how verbose the page is presented (on braille display and voice) is entirely up to the blind user. Don't bother with that, they'll figure it out themselves
If the talking of the screenreader annoys them, they can always press shift to pause the screenreader or control to silence it altogether. They'll be fine.
How can we protect our image being copied from our web site?
Can we disable copying image content from our website or any?
You cannot stop an image from being downloaded from your web site. If this image is visible somehow on the site it means that clients already have it. You could add watermarks to the original to claim copyright. Some other techniques might involve incorporating the image into a Flash movie which would make it harder but not impossible to retrieve.
IMHO clearly stating copyright ownership of the images somewhere on your site should be enough.
You cannot protect your images from copying. You can add watermark or some other artefact to it to discourage people from copying it, but you cannot prevent it (if you want it to be shown on your webpage, it is publicly available).
You may find this article as useful: Your images are a virus. They are EVERYWHERE on the Internet
You can't prevent image copying from your website, if it is served to the clients' browsers it can be copied.
"User saw your images" means, he/she have already downloaded to his computer. But maybe you could put some trick to block users who are not advance on computer usage.
For example;
Disabling right click with javascript etc. (Not block us but blocks someones :) ) as described
You can try using a script and a transparent Gif or PNG overlay that is positioned over the image.
If the user back click they would end up with a blank image instead. This can be a little frustrating for them, and can sometimes be a bit difficult to figure out.
This may offer some low level help, unless the person is using a screen capture tool.
How to Disable print, print screen, right click using asp.net
You cant. You cannot avoid content being copied from your pages.
Disabling Right Click is possible, but it doesnt solve your 'problem'. The user could still copy your image, by disabling javascript or just inspecting the source.
And even if you could disable those keys, the user could still just make a photo of his monitor. Good luck disabling that!
Short answer: You don't. You are writing a web application; features of the underlying platform are outside your scope, and you have no business trying to fiddle with them.
Long answer: You can try to capture those keys using javascript, and override the default behaviour, which will somewhat stop very naïve users, but all it takes to disable this "security" is to turn off javascript. Even if you come up with more sophisticated "protection", the essence remains: You are sending content to the client, and once it gets there, it is out of your hands. Given suitable tools (wget is enough for most things), anyone can copy and modify your content in any way they like. Similarly, whatever can be shown on the screen inside a browser can be captured and saved. There is no way around it. If you don't want your content copied, don't send it.
Forget about it. You will irritate your end users who will find a way to con you and do what you didn't want them to do. Forbidden fruit is always the sweetest. By telling them explicitly "you cannot do this", they will wonder why do you want to guard your content and they might try even harder to do stuff you otherwise wouldn't want them to do.
Psychology and technology are against you in this case.
Printing
You could disable printing (well sort of - it's not 100% effective) using a "print" style sheet.
I have not tried it myself, but here is a link that could get you started: http://webdesign.about.com/od/advancedcss/qt/block_print.htm
Print screen
Print screen is something that is typically controlled by the operating system not the browser nor webpage. So you are unlikely to be able to stop this. However, casting my mind back I remember a time (perhaps a long long time ago), where you couldn't take screen shots in Windows (maybe Windows 98) of videos... so if your really in need of disabling print screen - perhaps you could perhaps encode your content in a video... but this will have many many downfalls - namely accessibility, search engine optimisation and it being a royal pain to do... so I wouldn't recommend it under any circumstance.
Right screen
Right click you can disable, but not using a server-side technology (such as ASP.net) instead in a client-side technology such as javascript. A quick search in your favourite search engine will find some help. But disabling right click is rudimentary to get around, so it is not full proof.
An alternative to protect your content is to possibly investigate "rights" in PDFs. I believe you can disable the "right" to print.
However none of these solutions are going to be full-proof. As long as you are making your content available to an end-user on their own computer, there is always going to be a way around your restrictions.
I have implemented for disabling printing using window.onbeforeprint()
Refer this Answer