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How Bluesky draws its logo on screenshots

timmarinin.net

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Re: How Bluesky draws its logo on screenshots

#101

Post by edoceo »

echoangle wrote: post #85
raincole wrote: post #81

Earlier quoted context omitted.

> The app knowing I took a screenshot feels adjacent to me to a keylogger. That is what this article is about and why you should read it before commenting. The whole point is that it doesn't need to know you're taking screenshots. That's why it's a clever trick.

But for completeness, iOS apps can detect screenshots. That’s what allows them to show annoying popups with a share option when you take a screenshot.

What? App-B on iOS knows when I'm taking a screenshot from App-Y? I don't have iOS to check but that seems crazy.

Re: How Bluesky draws its logo on screenshots

#102

Post by chrsstrm »

CircuitSeuss wrote: post #63
thepasswordis wrote: post #38

Earlier quoted context omitted.

It is actually astonishing to me that this is not something which can be turned off at the OS level, or as a permission setting in the app permissions. The app knowing I took a screenshot feels adjacent to me to a keylogger. Imagine how many apps are capturing that information silently. To my mind, a screenshot is something that is happening outside of the app context, the app knowing about it is a security flaw imo.

> The app knowing I took a screenshot feels adjacent to me to a keylogger. To my knowledge, this is a misunderstanding. The app does not know that you are taking a screenshot, rather iOS knows you are taking a screenshot (as it must) and is excluding an element on display that has been designated by the developer as sensitive information. This is the same technology that prevents you from accidentally screenshotting…

"The app does not know that you are taking a screenshot, rather iOS knows you are taking a screenshot (as it must) and is excluding an element on display that has been designated by the developer as sensitive information. This is the same technology that prevents you from accidentally screenshotting your password manager"

And that is reasonable, but it is also a surface where an app touches the OS, which should be a permission boundary that I can control. Allowing the option to opt-out of screenshot blocking with a proper double-confirm warning and biometric auth is also reasonable.

Re: How Bluesky draws its logo on screenshots

#103

Post by alasano »

3form wrote: post #2

Well, I have not once found a single case where an app reacting to screenshots and controlling the process in any way was anything to me but hostile and annoying. This one does not help. It somehow is perfect example of how modern software engineering feels to go astray for me. A feature in my device working completely in benefit of the one providing said software. I wish, and wish only I can, that this trend goes aw…

I hate the ChatGPT app and Spotify the most for their screenshot behavior.

Re: How Bluesky draws its logo on screenshots

#104

Post by red_hare »

pfraze wrote: post #33

This is in fact a watermark to promote the application, which otherwise wouldn't be recognizable since Bluesky looks like every other microblogging app. I didn't know that Sam literally named the file GrowthHack.tsx, which is pretty funny.

I can't help but respect the dev's self-awareness

Re: How Bluesky draws its logo on screenshots

#105

Post by Larrikin »

singpolyma3 wrote: post #90
Larrikin wrote: post #28

Earlier quoted context omitted.

Implementing a watermark isn't a thing anyone thinks is a cool feature they want to try out.

I mean. I read this and immediately thought it was a cool thing I'd like to try out

By the end of your first year in CS you will have hopefully learned enough to place an image on something, that's about as cool as it gets.

Re: How Bluesky draws its logo on screenshots

#106

Post by zahlman »

CircuitSeuss wrote: post #63
thepasswordis wrote: post #38

Earlier quoted context omitted.

It is actually astonishing to me that this is not something which can be turned off at the OS level, or as a permission setting in the app permissions. The app knowing I took a screenshot feels adjacent to me to a keylogger. Imagine how many apps are capturing that information silently. To my mind, a screenshot is something that is happening outside of the app context, the app knowing about it is a security flaw imo.

> The app knowing I took a screenshot feels adjacent to me to a keylogger. To my knowledge, this is a misunderstanding. The app does not know that you are taking a screenshot, rather iOS knows you are taking a screenshot (as it must) and is excluding an element on display that has been designated by the developer as sensitive information. This is the same technology that prevents you from accidentally screenshotting…

> This is the same technology that prevents you from accidentally screenshotting your password manager

Yes, and I would say it's a bad thing that the OS tries to prevent this.

> seeing “follow” on every screenshotted post is just useless noise, but a small unobtrusive platform icon is a useful reminder that the post came from Bluesky and not another very visually similar service like X(cancel) or Mastodon.

I would say it's a bad thing that Bluesky makes the screenshot look different from what was on screen for the user. If I cared about excluding the "useless noise" from a faithful depiction of the pixels on my screen, I could address that myself.

Re: How Bluesky draws its logo on screenshots

#107

Post by BasicallyBluesk »

Mtinie wrote: post #66
internetter wrote: post #32

Nobody in the comments talking about snapchat where like one of the core pillars of what "sets their service apart" is the difficulty of taking a screenshot without notifying the other party

Wasn’t that the entire premise of the product when it launched? Disappearing messages and minimal footprint so you could be confident your communications were semi-private? That was the expectation of using the product so it fits and isn’t anything like this discussion.

That plus product design.

Yellow.

They fuckin did it. Not construction not a warning of some type. Not yellow pages. Yellow - cool looking yellow.

Is what I said to myself as a 20-something product designer

Re: How Bluesky draws its logo on screenshots

#108

Post by edoceo »

nemomarx wrote: post #44
javier2 wrote: post #34

Earlier quoted context omitted.

Did you read the post? Nothing is hijacked, but its a trick where they render the normal button in a ui element for secret data, which is blanked by the system on screenshot, revealing the logo underneath. Its a reasonable feature, so its hard for apple to control it better or remove this.

users should have some way to control if screenshots have secret data in them or not, really. what if I do actually need to preserve it?

I like your idea. When the screenshot is taken a user can have an option: Include Secrets? And the Apps can only hint at what to hide.

Re: How Bluesky draws its logo on screenshots

#109

Post by edoceo »

drdexebtjl wrote: post #74
bigyabai wrote: post #5

Earlier quoted context omitted.

> I wish, and wish only I can, that this trend goes away at some point. You don't have to wish, in this scenario. Bluesky supports third-party clients, you can use one that has a more minimal featureset if you prefer.

For Bluesky, sure. I think the comment was aimed at the trend. Android and iOS should not let apps do this, because it can be (ab)used by apps that you can’t really choose not to use. I know there’s a popular bank in my country that completely blocks screenshots and screen recordings on Android somehow.

In USA Wells Fargo blocks it, so I can't get a picture of the bugs I'm trying to report.
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