Re: [android-developers] How to communicate with Google Server for Android App License Verification?
I want to do the same... LVL makes no sense, because its to easy to skip this check. But checks are absolutely necessary, because after a few hours you are published a new app, the whole world is downloading it from apk sites. You have to implement an individually check that have to be cracked manually by a cracker, not by a easy to use Crack-Tool. This needs a few weeks/month to publishing this at APK sites :) And when the old App-Version is cracked... you will publishing a new version with a little bit modified parameters and new functions... and this needs again cracking time. Its not uncrackable, but it annoys the APK downloaders, because they have to wait again and again for a new crack. So I think the most people will buy this app, because they absolutely want this app ;-) But I have the same question... how I can ask the Google Play Server for an Order-Number that entered the user in a Pop-Up Window to check this Order is paid? I've read a few days long mass of API documents, but its not working. Is there working complete sample code with PHP? On Saturday, July 27, 2013 7:52:53 AM UTC+2, TreKing wrote: You don't really. Anyone that is determined enough to crack your app eventually will. The question is how much time and effort do you want to spend trying to put these checks and validations. I don't think you can do what you're asking, so your best option is to use LVL as is. - 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
Why don't you just learn how to defeat the crack tool. I do in fact know what you're talking about, since I've written one of these crack tools. If you write and obfuscate your app correctly, these tools won't work. Your solution will be crackable too, so there's no sense in wasting your time: your app will be cracked if it's popular enough, there are sort of ways to prevent this (using am account system on the server, etc...) but at the end of the day it's not at all easy for an amateur to make their app crack proof. Kris On Jul 28, 2013 8:58 AM, AndroidYourself mon...@2aba.de wrote: I want to do the same... LVL makes no sense, because its to easy to skip this check. But checks are absolutely necessary, because after a few hours you are published a new app, the whole world is downloading it from apk sites. You have to implement an individually check that have to be cracked manually by a cracker, not by a easy to use Crack-Tool. This needs a few weeks/month to publishing this at APK sites :) And when the old App-Version is cracked... you will publishing a new version with a little bit modified parameters and new functions... and this needs again cracking time. Its not uncrackable, but it annoys the APK downloaders, because they have to wait again and again for a new crack. So I think the most people will buy this app, because they absolutely want this app ;-) But I have the same question... how I can ask the Google Play Server for an Order-Number that entered the user in a Pop-Up Window to check this Order is paid? I've read a few days long mass of API documents, but its not working. Is there working complete sample code with PHP? On Saturday, July 27, 2013 7:52:53 AM UTC+2, TreKing wrote: You don't really. Anyone that is determined enough to crack your app eventually will. The question is how much time and effort do you want to spend trying to put these checks and validations. I don't think you can do what you're asking, so your best option is to use LVL as is. --**--** --**--- 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
i think using your license service is the best. We built that kind of service too. On Mon, Jul 29, 2013 at 2:18 AM, Kristopher Micinski krismicin...@gmail.com wrote: Why don't you just learn how to defeat the crack tool. I do in fact know what you're talking about, since I've written one of these crack tools. If you write and obfuscate your app correctly, these tools won't work. Your solution will be crackable too, so there's no sense in wasting your time: your app will be cracked if it's popular enough, there are sort of ways to prevent this (using am account system on the server, etc...) but at the end of the day it's not at all easy for an amateur to make their app crack proof. Kris On Jul 28, 2013 8:58 AM, AndroidYourself mon...@2aba.de wrote: I want to do the same... LVL makes no sense, because its to easy to skip this check. But checks are absolutely necessary, because after a few hours you are published a new app, the whole world is downloading it from apk sites. You have to implement an individually check that have to be cracked manually by a cracker, not by a easy to use Crack-Tool. This needs a few weeks/month to publishing this at APK sites :) And when the old App-Version is cracked... you will publishing a new version with a little bit modified parameters and new functions... and this needs again cracking time. Its not uncrackable, but it annoys the APK downloaders, because they have to wait again and again for a new crack. So I think the most people will buy this app, because they absolutely want this app ;-) But I have the same question... how I can ask the Google Play Server for an Order-Number that entered the user in a Pop-Up Window to check this Order is paid? I've read a few days long mass of API documents, but its not working. Is there working complete sample code with PHP? On Saturday, July 27, 2013 7:52:53 AM UTC+2, TreKing wrote: You don't really. Anyone that is determined enough to crack your app eventually will. The question is how much time and effort do you want to spend trying to put these checks and validations. I don't think you can do what you're asking, so your best option is to use LVL as is. --**--** --**--- 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- Regards, Michael Leung http://www.itblogs.info - My IT Blog http://diary.skynovel.info - My Blog http://www.michaelleung.info - My Homepage -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
On Mon, Jul 29, 2013 at 8:23 AM, Michael Leung michaelchi...@gmail.com wrote: i think using your license service is the best. We built that kind of service too. An online service (Purchase Status API) is available for in-app billing. IAB has its faults, but is more flexible than paid apps, so you might consider using it. http://developer.android.com/google/play/billing/gp-purchase-status-api.html -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
Thanks to all. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
I want to block users who are using backed up copy of my app i.e. without purchasing from Google Play. I found that it is possible to repackage apk by modifying it. If repackaging is done in such a way that the license verification check is skipped then user of that app will be able to access all features in paid app without payment. In such case, how do I block unauthorized users? On Friday, July 26, 2013 1:10:50 AM UTC+5:30, TreKing wrote: On Thu, Jul 25, 2013 at 4:40 AM, gauri gauri...@gmail.com javascript:wrote: But I want do verification from my server which will directly communicate with Google Server. Why? - 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
So the solution is to not use LVL? ... That just sounds like a bad idea to me, since this is what LVL was designed to do. Kris On Fri, Jul 26, 2013 at 9:29 AM, gauri gauri.v...@gmail.com wrote: I want to block users who are using backed up copy of my app i.e. without purchasing from Google Play. I found that it is possible to repackage apk by modifying it. If repackaging is done in such a way that the license verification check is skipped then user of that app will be able to access all features in paid app without payment. In such case, how do I block unauthorized users? On Friday, July 26, 2013 1:10:50 AM UTC+5:30, TreKing wrote: On Thu, Jul 25, 2013 at 4:40 AM, gauri gauri...@gmail.com wrote: But I want do verification from my server which will directly communicate with Google Server. Why? - 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
On Fri, Jul 26, 2013 at 8:29 AM, gauri gauri.v...@gmail.com wrote: In such case, how do I block unauthorized users? You don't really. Anyone that is determined enough to crack your app eventually will. The question is how much time and effort do you want to spend trying to put these checks and validations. I don't think you can do what you're asking, so your best option is to use LVL as is. - 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [android-developers] How to communicate with Google Server for Android App License Verification?
On Thu, Jul 25, 2013 at 4:40 AM, gauri gauri.v...@gmail.com wrote: But I want do verification from my server which will directly communicate with Google Server. Why? - 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 For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
