Forward locked copy protection is really fragile, as it requires that nobody except approved entities get to the data (.apk). Thus you *must* trust the device you are delivering the .apk to, or else you have leaked the data and blown the forward locking. For example, a phone running a custom build of Android could allow the user to get root and copy your .apk off, at which point they can freely distribute it however they like.
The old copy protection mechanism is deprecated. It sucks. Don't use it. Use the licensing service. On Fri, Nov 19, 2010 at 8:58 AM, sblantipodi <perini.dav...@dpsoftware.org>wrote: > Thanks for the answer. > But I don't understood why a device is approved or not. > Is there a possibility that the injected DRM could prevent the app to > work on some devices? > > Thanks. > > On Nov 19, 5:49 pm, TreKing <treking...@gmail.com> wrote: > > On Fri, Nov 19, 2010 at 8:43 AM, sblantipodi > > <perini.dav...@dpsoftware.org>wrote: > > > > > What do you mean for unapproved devices? > > > > AFAIK, for copy protection Google has some list of devices that are > > considered "approved" for copy-protected devices to run on. Usually this > > meant that new devices would block copy-protected apps until Google got > > around to approving them. > > > > On Fri, Nov 19, 2010 at 10:26 AM, sblantipodi > > <perini.dav...@dpsoftware.org>wrote: > > > > > no one can tell me here what are the unapproved devices and why they > are > > > unapproved? > > > > Can you wait more than two hours to get a reply? Some of us have day > jobs. > > > > > ------------------------------------------------------------------------------------------------- > > TreKing <http://sites.google.com/site/rezmobileapps/treking> - Chicago > > transit tracking app for Android-powered devices > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com<android-developers%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
