You might sideload an Android app, or manually install its APK package, if you’re using a custom version of Android that doesn’t include Google’s Play Store. Alternately, the app might be experimental, under development, or perhaps no longer maintained and offered by its developer. Until now, the existence of sideload-ready APKs on the web was something that seemed to be tolerated, if warned against, by Google.

This quiet standstill is being shaken up by a new feature in Google’s Play Integrity API. As reported by Android Authority, developer tools to push “remediation” dialogs during sideloading debuted at Google’s I/O conference in May, have begun showing up on users’ phones. Sideloaders of apps from the British shop Tesco, fandom app BeyBlade X, and ChatGPT have reported “Get this app from Play” prompts, which cannot be worked around. An Android gaming handheld user encountered a similarly worded prompt from Diablo Immortal on their device three months ago.

Google’s Play Integrity API is how apps have previously blocked access when loaded onto phones that are in some way modified from a stock OS with all Google Play integrations intact. Recently, a popular two-factor authentication app blocked access on rooted phones, including the security-minded GrapheneOS. Apps can call the Play Integrity API and get back an “integrity verdict,” relaying if the phone has a “trustworthy” software environment, has Google Play Protect enabled, and passes other software checks.

Graphene has questioned the veracity of Google’s Integrity API and SafetyNet Attestation systems, recommending instead standard Android hardware attestation. Rahman notes that apps do not have to take an all-or-nothing approach to integrity checking. Rather than block installation entirely, apps could call on the API only during sensitive actions, issuing a warning there. But not having a Play Store connection can also deprive developers of metrics, allow for installation on incompatible devices (and resulting bad reviews), and, of course, open the door to paid app piracy.

  • Riley
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    6 days ago

    If the Play Store becomes required like that then Android’s already-shaky status as an open source base platform is going to go out the window. I’m glad there are non-Google distros of Android but there really needs to be more of a push to make a completely FOSS phone platform.

    • IllNess@infosec.pub
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      6 days ago

      There are Linux phones available. I,m going to guess popularity of those devices to increase soon.

      • Snot Flickerman@lemmy.blahaj.zone
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        6 days ago

        That was the hope with Android, too.

        The problem is that as the OS is “free” that means it costs less functionally for the device manufacturer to get an OS on the device, so now they can pour more money into bloatware.

        Android was supposed to stop bloatware but all it did was enable it.

        Even without a forced “store” Linux is prey to the same issue of piecemeal support from various vendors all with in-house solutions that all stink.

        • doctortran@lemm.ee
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          5 days ago

          At this point, even that would be preferable.

          Your right, any open platform will be bastardized eventually, but that doesn’t mean there isn’t still a need for “resets”.

          There is no perfect platform for escaping it, because the market forces will always adapt and assimilate. The only true escape is to keep moving.

          That’s why it’s important for users to be hermit crabs, and move to the next thing, no matter how janky, because they will at least be able to influence it positively and have a relatively open platform for a number of years. Then the cycle repeats.

          If propping up Linux phones will get us the open platform we need, even if only temporarily, we should do it.

          The issue I think is that the current trends in all consumer software are increasingly user hostile, and the major platforms are creating ecosystems to support this. It’s become the norm now to be able to directly control the usage of the software on consumer devices. Apple has normalized this, Google and Microsoft followed.

          At what point will developers refuse to even create software for a system that doesn’t allow them that control?

          Look at how many developers out there absolutely jerk themselves raw at the idea they should be able to compel users to update to continue using their software. Look at how many believe the modern security culture fallacy that handcuffing users and throwing away the key is the only way to protect them.

          It’s a development culture issue. Respecting user control of their own device is no longer in vogue.

      • Vik@lemmy.world
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        6 days ago

        As much as I want that to be the case, I don’t think full mobile gnu+Linux is really ready to use daily?

        I haven’t exactly been keeping up with things, mind you

        • timbuck2themoon@sh.itjust.works
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          5 days ago

          I sub to a few mobile Linux feeds and I want but don’t at all think mobile Linux is ready, even for tech devotees. Too battery hungry, not enough ease of use, missing functions, etc. And that’s not including lack of apps.

          Sailfish gets closest so far I think. But yes, not ready. Ubuntu touch last time I tried is fine but still a bit out of sorts.

        • kspatlas@lemm.ee
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          5 days ago

          Just a note, one of if not the most popular mobile Linux distro is PostmarketOS, which is not GNU (it’s based on Alpine)

          • Vik@lemmy.world
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            5 days ago

            Good to know, that’s not the one I had in mind, however.

            For whatever reason I thought PMOS was based on Manjaro. Could be something as silly as associating one green logo with another.

        • IllNess@infosec.pub
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          6 days ago

          Yes. I think a huge issue is Linux doesn’t handle other app activities like how Android’s Intent or Broadcast does.

      • Dizzy Devil Ducky@lemm.ee
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        6 days ago

        Sadly the only people who would switch over to an actual Linux phone would be the people like the stereotypical Linux using Lemmy user. The average android user would just continue on like nothing happened because they’re not tech literate enough to know what’s going on or why they should care.

      • helenslunch@feddit.nl
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        6 days ago

        Linux isn’t even popular on desktop. No way a mobile version becomes popular without some massive shifts in Linux ideology and culture.

      • namingthingsiseasy@programming.dev
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        6 days ago

        But part of the appeal of Linux is the fact that you can repurpose existing computers running other OSes to run Linux instead. This is a great way to lower the barrier to entry for Linux, because it’s easy to test it on a Live USB or a dual boot. It’s much harder to do this on phones because they have locked bootloaders.

        Another problem is that phones are not productivity devices - they’re consumption devices. Maybe this is just my personal bias, but I don’t think people will be as passionate about liberating their phones because they’re inherently less useful than computers. Convenient, yes, but useful? Not as much.

        That said, I would love to be proven wrong. I would definitely consider a Linux phone if they become more popular/useful, but I can’t really justify spending hundreds of euros/dollars on something for which I don’t see any particular use.

      • XTL@sopuli.xyz
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        5 days ago

        There aren’t, really. There are a few antiques and half baked things.

        A big problem is that these days, unless you’re the size of Apple or Samsung, it’s impossible to get a reasonable hardware soc and modem other than one which only runs a soon obsolete blob laden android which is going to be EOL before you’ve even finished your design.

        The hardware is not there. The firmware/hw data/platform isn’t there even to begin OS work with. And there’s a global shipping, regulation and mobile operator hell waiting on the other side. And a product lifecycle that’s only a few years long.

        Yes, I’ve worked for phone manufacturers.

    • whats_all_this_then@lemmy.world
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      5 days ago

      The more I think about it, this may finally convince me to…shudders…switch to an iPhone. I’ve always stayed on Android because despite the recent Google bullshit, it still for the most part lets me do whatever. Side-loading apks is a huge part of that.

      If it’s turning into a shittier iOS clone, what’s the point?

      • Corkyskog@sh.itjust.works
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        5 days ago

        Don’t do IOS, it’s such a pain. It took us 2 days to figure out how to play an audio book file that I was able to download an F-droid app for and play in like 3 minutes.

        • whats_all_this_then@lemmy.world
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          5 days ago

          Yup that sounds about right for iOS.

          Meant more that if Android ends up in the same boat (and by the looks of it, that’s exactly what Google and Samsung want), then iOS starts to look viable because the situation becomes: all the same bullshit but iOS is polished to a shine.

          Don’t plan on switching phones until my less than year old Note 9 kicks the bucket 😅

    • FangedWyvern42@lemmy.world
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      6 days ago

      There are Linux mobile operating systems like PostmarketOS, but they are too early in development to be used by most people.