This should have an epilepsy warning. Or something of that kind. It certainly made me feel sick.
Oh yes please add a warning. My brain is burning right now!
Show HN: The text disappears when you screenshot it
81–90 of 204 posts
Re: Show HN: The text disappears when you screenshot it
#82Another idea I had with this concept is to make an LLM-proof captcha. Maybe humans can detect the characters in the 'motion' itself, which could be unique to us? - The captcha would be generated like this on a headless browser, and recorded as a video, which is then served to the user. - We can make the background also move in random directions, to prevent just detecting which pixels are changing and drawing an outli…
I don't think we need more capable people thinking of silly captchas.
Re: Show HN: The text disappears when you screenshot it
#83Sure, but I can just record a video instead. It doesn’t disappear then!
Re: Show HN: The text disappears when you screenshot it
#84In your phone, just record the screen, then drag the player to see how every still pic blend in within the surroundings, but as soon as it moves it shows up.
Re: Show HN: The text disappears when you screenshot it
#85This game disappears if you pause it: https://youtube.com/watch?v=Bg3RAI8uyVw
Yes - I was thinking of this. It solves various complicated problems such as rendering distance information in this format.
Re: Show HN: The text disappears when you screenshot it
#86You can take TWO screenshots, moments apart, open in GIMP, paste one over the other and choose any one of these laying modes: Lighten, Screen, Addition, Darken, Multiply, Linear burn, Hard Mix, Difference, Exclusion, Subtract, Grain Extract, Grain Merge, or Luminance. https://ibb.co/DDQBJDKR
Out of sheer curiosity, I put three screenshots of the noise into Claude Opus 4.1, Gemini 2.5 Pro, and GPT 5, all with thinking enabled with the prompt “what does the screen say?”.
Opus 4.1 flagged the message due to prompt injection risk, Gemini made a bad guess, and GPT 5 got it by using the code interpreter.
I thought it was amusing. Claude’s (non) response got me thinking - first, it was very on brand, second, that the content filter was right - pasting images of seemingly random noise into a sensitive environment is a terrible idea.
Re: Show HN: The text disappears when you screenshot it
#87If anybody implements that to antiscrenshot some sensitive data, somebody else will use another phone, a tablet or a camera to record a video of it. Nice idea though.
Re: Show HN: The text disappears when you screenshot it
#88Could someone please post what this disappeared bit is supposed to look like? Looks legible to me when I screenshot and open in Preview on MacOS 15.6.1 (Firefox).
Re: Show HN: The text disappears when you screenshot it
#89This should have an epilepsy warning. Or something of that kind. It certainly made me feel sick.
This is more a curious question for those affected by epilepsy. If you know you are triggered by such things how long an exposure is required to trigger an effect. Are you able notice that media may be triggering and simply close it or is exposure and triggering almost instantaneous?
Re: Show HN: The text disappears when you screenshot it
#90I don't see any text: just a scrolling down screen of random black/white pixels.
It seems to depend on reading pixels from a canvas. This is commonly used for fingerprinting users on the web, so you have to disable some privacy plugins.