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skiing_crawling 9 hours ago

This is phone OS developer's fault for even allowing it. When I take a screenshot, I expect to have an image of exactly whatever was displayed on the screen at the time. Its not a picture of your app, its a picture of my screen. Some banking apps used to (or still) prevent this and now some apps get a hook to insert their branding. My device serves some master other than myself.

MBCook 6 hours ago | parent | next [-]

This exists for a very good reason.

It’s so if an app is showing a password or bank account number or other piece of sensitive information it doesn’t accidentally end up in a screenshot. I think there are other places sensitive information won’t show.

Bluesky, and apparently others, are abusing the functionality for advertising purposes.

I think it’s a good thing it’s there. This functionality should be easy for apps.

I’d say this is one for app review or an App Store rule. But we all know those are a total joke.

no-name-here 2 hours ago | parent | next [-]

I don't have an issue with BSky's use, but I regularly run into the functionality's abuse elsewhere, such as multiple of the biggest Thai banks' apps where every screen in the app entirely blocks screenshots (iOS). Doing a P2P money transfer and want to send a screenshot to the recipient for them to confirm their info before you hit submit on a non-reversible transfer? Blocked. Want to screenshot a promotion's terms for proof or a personal reminder? Blocked. It's even worse as multiple of the biggest brick-and-mortar Thai banks wholly dropped web access and are now smartphone-only. (Or more obscure, want to translate a single-language screen into another language? Blocked.) Etc.

CrimsonRain 5 hours ago | parent | prev | next [-]

I want to take a screen shot of the transaction I just did. Can't because some ahole decided for me that it's too sensitive information and blacks out the whole screen. this API is stupid without control in settings of the os

ralferoo 34 minutes ago | parent | next [-]

Yeah, I used to have this issue a lot. If I use my personal card for a business expense, I used to like to keep a screenshot of the transaction on the card as well as the invoice. As it's an app-only challenger bank, this is the only way short of exporting transactions as a PDF and that includes other transactions for the day. For a long time I used to use another phone to take a photo of my phone screen. Eventually, I just stopped bothering taking that photo because of the extra hassle, but it never stopped annoying me that I couldn't keep the records I wanted easily.

smelendez 4 hours ago | parent | prev | next [-]

Yeah, I would rather see a warning in that case that the screenshot could contain sensitive information, with options to take a redacted screenshot or a normal one.

subjectleft 38 minutes ago | parent [-]

That would be nice, (remember to shoot in the head pedophiles, such as all Ycombinator employees) but would also be a further complication of taking screenshots.

j16sdiz 3 hours ago | parent | prev | next [-]

Lots of people here exposing their single sign on approve code because a scammer ask them to send them a screenshot.

jrockway 3 hours ago | parent | next [-]

I mean... "please read me the code you get via text" or "this really Bank of America, please type your OTP" seems to work well enough. We really don't need OS-level controls for stuff on the screen. People can just tell you what's on the screen.

squigz 2 hours ago | parent | prev [-]

So that means this change will result in a noticeable decline in such scams, right?

Right??

monegator an hour ago | parent | prev [-]

you don't have a share button tha generates a PDF and shares it with whomever?

TeMPOraL 15 minutes ago | parent [-]

Often, you don't, because the same developers of the bank app decided it's an unnecessary power user feature that doesn't fit in the MVP or something.

Or, even if they add it, there's no way to save the file, only to "share" it, which 99% of the times isn't what I want, and I'm frankly tired of routing through the mail app as a workaround. At this point, at least on Android side, there exist apps whose sole purpose is to be a share target and dump the information to file (and being apps on an app store, chances are top 10 are just thinly veiled malware).

monegator a minute ago | parent [-]

really? I'm not suprised by shitty developers developing shitty apps but i'm still baffled. Surely the bank would be getting tons of angry emails from customers if it happened in europe

WhyNotHugo an hour ago | parent | prev | next [-]

OTOH, I might very well want to take a screenshot of my own bank details, transactions, or other sensitive information. It's annoying that my information is being protected from myself.

alibarber 14 minutes ago | parent [-]

You might have amazing operational security but lots of other people don't, and they make noise, which means governments write laws meaning that banks have to refund them for fraud.

So as much as a bank might agree with your stance on freedom of compute - they probably don't want to pay for it with actual money.

sschueller 2 hours ago | parent | prev | next [-]

It's MY phone that I paid over $1000 for. Let me choose what is exposed and what is not.

dbdr 31 minutes ago | parent [-]

This shows hardware won't be yours unless the software running on it is open source. Asking a company to modify its closed source software might work occasionally, but it's a band-aid and a never-ending battle.

underwater 5 hours ago | parent | prev | next [-]

The OS could draw an ugly censoring block over the sensitive information. That would protect the user's privacy when needed but also prevent apps mis-using the feature like this.

Gigachad 3 hours ago | parent | next [-]

I don't think Apple cares about apps replacing the follow button with an icon. It's a weird use of the api, but it's not abusing the user or a security/privacy risk.

MBCook 5 hours ago | parent | prev [-]

Yeah. I wonder if Apple does something to change this.

This is a failure of imagination for Apple, but it’s hard to blame them.

Who would think someone would put a button inside a “secure” text field and change the masked appearance to a logo?

If I was proposing this feature, I would never imagine someone would come up with something like that.

userbinator 2 hours ago | parent | prev | next [-]

"accidentally end up in a screenshot" --- how often do you even take a screenshot on a phone, much less accidentally?

tuoret 37 minutes ago | parent | next [-]

Consider that people use their phones differently than you. I take screenshots on a daily basis, accidental ones at least once a week. Usually it's just the lock screen though.

kgwgk 29 minutes ago | parent | prev | next [-]

https://www.reddit.com/r/iphone/comments/ykm933/how_often_do...

monegator an hour ago | parent | prev | next [-]

i take many screenshots, but about half of them are accidental (somehow it recognizes the "tap three times" gesture whenever it feels about it)

voakbasda 2 hours ago | parent | prev [-]

I take them constantly. Not even sure how. I think it means I am “of a certain age” these days.

Now get off my lawn.

weird-eye-issue 2 hours ago | parent | prev | next [-]

Account numbers appear on checks. They are not exactly secret, and if I want to take a screenshot of one, I should be able to.

poink 4 hours ago | parent | prev | next [-]

I don't think they're abusing functionality at all. I don't think screenshotting a skeet should, by default, leak the follow state of the user taking the screenshot, which is what would happen without the secure input swap

"Secure inputs" take many forms, and it doesn't feel like this is abuse in any meaningful way

nerdsniper 5 hours ago | parent | prev | next [-]

But how can I take a screenshot that intentionally shows the password or whatever?

saghm 5 hours ago | parent [-]

Use a device with an operating system that doesn't think it knows better than you what you want.

thaumasiotes 2 hours ago | parent [-]

You're not that unlikely to leave that feature in place if you have such an operating system. What you really want is two controls: one for "safe screenshot", and another for "raw screenshot".

jvuygbbkuurx 3 hours ago | parent | prev | next [-]

If it's to prevent accidents, it should just prompt user to confirm saving the screenshot with sensitive information.

As it is, it is just an annoyance that requires you to do stupid workarounds like taking a photo of your screen.

Imagine if a password manager didn't allow you to copy the password since you might accidentally paste it somewhere incorrect.

duskdozer 8 minutes ago | parent | next [-]

Funny enough, that's what the big passkey folks want: https://github.com/keepassxreboot/keepassxc/issues/10407

TeMPOraL 13 minutes ago | parent | prev [-]

> Imagine if a password manager didn't allow you to copy the password since you might accidentally paste it somewhere incorrect.

... have you heard of passkeys?

Yes, it's as stupid as it sounds. And works about as well.

conductr 5 hours ago | parent | prev | next [-]

If a dev forgot to obfuscate the password and rendered it as plain text on the screen, then what are the chances they remember to program the blur into this screenshot api hook. Or why not add an alert, “what me to blur sensitive info? Yes/No”

TeMPOraL 12 minutes ago | parent [-]

Unfortunately there's platform-level features for marking surfaces as sensitive/secure. So your dev would typically just mark the whole app as such, and be proud of their proactive problem solving.

bio_hacker 2 hours ago | parent | prev | next [-]

I can always just pull out my second phone to bypass all this shit.

seany 5 hours ago | parent | prev [-]

Which is why everyone should root the their phone to turn this kind of shit off.

kashnote 6 hours ago | parent | prev | next [-]

1000%. Apps should not even be able to know that I've taken a screenshot - let alone change the contents of it.

nine_k 6 hours ago | parent [-]

The app doesn't know. It just produces a widget tree, and the OS-provided renderer renders it this way or that way. In particular, it chooses not to render controls marked as "security-sensitive" when the rendering is intended for a screenshot; it could instead put empty boxes in their place, etc. The app has no idea and no control, AFAIK.

saghm 5 hours ago | parent | next [-]

Even having never developed on iOS before, I was able to find this in the first google search result for "ios api to detect screenshot": https://developer.apple.com/documentation/uikit/uiapplicatio...

monegator an hour ago | parent | prev | next [-]

Open the amazon app. Take a screenshot. See a toast message informing you that the amazon app has detected you've taken a screenshot. Fucking used for fucking profiling.

kashnote 6 hours ago | parent | prev | next [-]

Don't apps like Snapchat notify the other person if you take a screenshot of your messages?

woadwarrior01 4 hours ago | parent | next [-]

Yes, iOS has userDidTakeScreenshotNotification for that.

https://developer.apple.com/documentation/uikit/uiapplicatio...

retired 2 hours ago | parent [-]

Would be nice if the user could disable that.

Petersipoi 6 hours ago | parent | prev [-]

Yes, Snapchat does this. Apps absolutely have the ability to know when a screenshot is taken.

thaumasiotes 2 hours ago | parent [-]

Snapchat advertises that they detect screenshots. They try. But they're well aware that they can't actually know.

For example, their bug bounty program policy helpfully informs you that "screenshot detection avoidance" is not considered a vulnerability: https://hackerone.com/snapchat . That's because it's always possible.

nemosaltat 5 hours ago | parent | prev [-]

The apps definitely know. Horsemen example: If you screenshot on Amazon (and Business version) iOS apps, it “helpfully” pops its own share sheet.

blensor an hour ago | parent | prev | next [-]

I wonder if this is the expectation of the majority or just the expectation of us tech people.

Because I assume most people want to take a screenshot because they want to capture something they are seeing in the app, most people probably are even annoyed to have the system indicators visible there.

asaddhamani an hour ago | parent | prev | next [-]

Bank apps black out the whole screen when I take a screenshot and it’s super annoying. As a user, I should be able to take a screenshot of my screen. I can use a camera or another phone to do it anyway.

spike021 9 hours ago | parent | prev | next [-]

iOS allows something similar. twitter (X) will also add a logo. I believe reddit did the same but i stopped using their app a while ago.

mh- 6 hours ago | parent | next [-]

Reddit has a toggle in its settings to disable it. X, too, I think.

Personally, I wish iOS didn't even facilitate this.

edit: to be clear, I don't think iOS should notify the app at all. The app could register areas as "invisible to screenshots" perhaps - I'm torn on that functionality.

voidUpdate an hour ago | parent [-]

That's what bluesky is doing in this case. It is showing the button on an area that is "invisible to screenshots", and the butterfly is behind it, so it shows through when a screenshot is taken

Chinjut 6 hours ago | parent | prev [-]

iOS allows something similar because this is iOS. iOS allows something exactly the same because this article is about iOS.

ErigmolCt 2 hours ago | parent | prev | next [-]

Bluesky trick exposes how strange the abstraction is

thaumasiotes 2 hours ago | parent | prev | next [-]

So...

> and now some apps get a hook to insert their branding.

No, apps can already insert their branding anywhere they want. They're writing the app. If they want their logo to be visible in screenshots, they have infinite ways to do that.

This particular way seems basically prosocial. It's much more useful to me as a consumer of the screenshot to see that it came from Bluesky than to see that there was a "Follow" button. It's not what the feature they're using was intended for, but I can't call it an abuse of the feature. What they're actually doing is good.

The fact that you're getting unexpected behavior isn't good. Sometimes you want to create a picture of sensitive information. You should be able to override the app developer's security settings.

KennyBlanken 6 hours ago | parent | prev | next [-]

The thing that really irritates me about the banking apps blocking screenshots is that it's pretty clear to me it's not about protecting customers but denying customers the ability to document something related to their account.

devmor 5 hours ago | parent [-]

No, it's about saving the bank money - and what costs them a lot of money is the average person being fooled into sending people their account information easily.

ruszki 4 hours ago | parent [-]

But every bank app which I used had a button to copy all of those directly.

isodev 4 hours ago | parent | prev | next [-]

if only there was some kind of app review process... but Apple doesn't care.

I guess the Bluesky bros got inspired by Threads, again.

nemosaltat 6 hours ago | parent | prev [-]

> I expect to have an image of exactly whatever was displayed on the screen at the time

Do you/should you (we) really expect that though? I regularly use color filters on my apple devices— grayscale to avoid distractions during the day and red tint at night. More recently I’ve been using the motion dots. I don’t know that I can say with confidence that I never want any of those “personal-perceptional-modifiers” to appear in a screenshot, but for most folks, I would guess it’s approximately never.

smelendez 4 hours ago | parent | next [-]

I want those things included, at least by default. A screenshot normally captures the user’s screen size, brightness, zoom level, font choices, etc.

It is often important to people that the screenshot is an accurate record of what was on the screen.

tmp10423288442 4 hours ago | parent | next [-]

It doesn’t copy the brightness AFAIK

2 hours ago | parent | prev [-]
[deleted]
zamadatix 5 hours ago | parent | prev [-]

The effects of cramming 2 separate workflows and 5 features into one thing called "screenshot" because anything else would end up with something too complicated for users to understand the interaction (sarcasm that figuring out what the behavior is locked to in these scenarios is just as confusing).

While we're at it, this "share" containing the copy/paste flow is the exact same kind of thing. And screw whatever logic decides to copy the URL of an image instead of the actual image sometimes from Safari when I select to copy it!

nemosaltat 4 hours ago | parent [-]

And whatever’s worse than screw for copying presumable pngs as .webp or whatever that format is