![]() To prevent screen capture in this way, the document would need to be housed in a controlled environment and users checked for recording devices before they interact with it. Naturally, your computer cannot tell if a user is pointing a camera at the screen and as such cannot blank out the content to stop the screen capture. Preventing someone from taking a picture of the screen with a phone or other camera is a very difficult task. To prevent screenshots from being taken, you need to have a dedicated application installed that controls OS functionality and cannot be manipulated by users. So, while it is possible to use JavaScript to prevent basic print screen capture, it is completely useless in practice. In addition, users can still take a screenshot by using the Windows Snipping tool or a screen grabber application such as Snagit. However, users can edit JavaScript in their browser and simply remove this code. In a browser environment, you could use JavaScript to disable the prtscr key, or to return a different image/mask. How to prevent screenshots by disabling Windows print screenīeing able to use print screen is a feature of the Windows OS – users can simply press the PrintScreen key on the keyboard to take screenshots. This is why the screen mask in Safeguard Writer is optional.Ĭan you prevent screenshots using JavaScript? You would also not want to apply a screen mask if training course instructors are using your documents to teach courses and they’re using two windows – one to display the protected document and the other for notes /additional information. If this is the case, enabling the screen mask option would not be appropriate. When providing online teaching or a training course, you probably want users to be able to take notes even if they cannot take a screenshot. Online teaching and preventing screen grabbing When focus is moved away from the Viewer window, an image covers the document so that content cannot be viewed. Safeguard PDF Security enables you to add a screen mask to prevent this. When dealing with confidential documents, for example, you may not want users to be able to view the document while also copying text from it by typing it into another application (Safeguard stops copy/paste so typing text into another application is the only option available to users). Secure data room systems that advertise as PDF DRM solutions, for example, cannot stop users from taking screenshots because the browser environment has no control over the Operating System.Įqually as important as stopping screen grabbing is the ability to mask document content if the focus is moved to another window. It takes the print screen protection that we can offer to a significantly higher level than any of our competitors, some of whom cannot disable copy paste or who just prevent print screen functionality by disabling use of the PrintScreen key. The DRM technology we use to prevent print screen and screen grabber tools is not invasive and does not affect any other programs or the operating system. We developed our technology to prevent print screen and the grabbing of screen content only for documents we have protected. While there is a real necessity to prevent print screen and screen grabbing, we recognize that there are genuine reasons to have screen grabbing tools. Safeguard stops screen grabbing without monitoring keystrokes or screen grabber applications – system resources are therefore kept to a minimum and 100% compatibility with anti-spyware systems is assured. Safeguard secure PDF Viewers block printscreen and screen grabbing applications using a variety of techniques – these include blocking and clearing video memory and the use of image overlays to stop simple copying and pasting. Safeguard PDF Security can prevent print screen and third-party PC screen grabbers from taking screenshots of protected PDF documents. Many screen grabber applications can automate the screen grabbing process so that an entire document can be copied very quickly and without user input. Stopping screen grabbing is an important step in protecting IPR since it is an easy and simple way for users to obtain high-quality copies of document content. LockLizard was the first company to protect PDF documents with enhanced technical controls that resist all current PC-based screen grabbers, stopping one of the most common methods of IPR theft in its tracks. This was then extended to prevent screen capture on Mac and Android. In 2007, we announced a major step forward in anti-piracy controls by adding functionality to prevent PrintScreen and third-party screen grabbing tools (such as SnagIt and Windows Snipping Tool) from taking screenshots of protected PDF content on Windows. Stop print screen & screen grabs: disable print screen & block screen grab software Safeguard Secure PDF Viewers block print screen and screen grabbers from taking screenshots of PDF content
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