1

Apart from monitoring keystrokes for Print Screen, is there a way for a tool or software running in Ubuntu (whatever the desktop) to detect that a screenshot or video recording of the whole or a part of the screen is being captured - regardless of the tool used (Gnome Screenshot, Shutter, etc)?

0

The short answer is "no, not on a vanilla Ubuntu distribution" (and btw, hitting printscreen is not the only way to take a screenshot).

The somewhat longer answer is that the question is ill-posed. Whether some approach might work would depend on the specific combination of X server (or whatever display server you are using), window manager, whether you are willing to write your own X extensions, what your threat model is, how tight control you have of your environment, and so on.

I'm curious, though, what is your threat model?

|improve this answer|||||
  • There are several scenarios. Example 1: detect when users take screenshots of copyrighted content displayed inside a software I developed. Of course they can use their smartphones to take lower quality shots. Example 2: detect if an untrusted third-party software is spying on my desktop. – Orion Apr 21 '16 at 21:15

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.