But a drawback is that if not properly checked,the same key could be used with any no of ur apps...
On Wed, Jun 3, 2009 at 5:29 PM, Sujay Krishna Suresh < sujay.coold...@gmail.com> wrote: > N one of my friends suggested that u make use of the serial key system for > differentiating bet licensed & unlicensed users... > it sounds good... the first time a user uses ur app... jus ask for their > key... also have an option for evaluate.. > if the user selects evaluate set a preference to null string or if the user > enters a correct key set it to smthin else... > the key validation is a onetime job... so i guess this will also not bother > ur performance... > > On Wed, Jun 3, 2009 at 5:26 PM, Sujay Krishna Suresh < > sujay.coold...@gmail.com> wrote: > >> aayush, if u r goin for client-side implementations then i'm very sure >> that there're many workarounds... >> one of it was mentioned by marc earlier... N plz be clear whether ur app >> is standalone or does it make use of web in ur LAN?? >> >> On Wed, Jun 3, 2009 at 5:15 PM, Neil <neilb...@gmail.com> wrote: >> >>> >>> For one thing, it's Secure.ANDROID_ID not System.ANDROID_ID. >>> >>> But the documentation on that is a bit vague. It seems to be related >>> to your Google login information, so that brings up two questions: >>> 1. is it sensitive information? >>> 2. does it change if you log in to another Google account? >>> >>> >>> >>> On Jun 3, 12:09 pm, mobilekid <mobilek...@googlemail.com> wrote: >>> > I would do the same. >>> > >>> > Get the android ID like this: >>> > >>> > String android_id = android.provider.Settings.System.getString >>> > (this.getContentResolver(), >>> > android.provider.Settings.System.ANDROID_ID); >>> > >>> > Then send it to your back-end and query the number of times you've >>> > made the same call or the date you firstly made a call against the >>> > unique ID. >>> > >>> > Hope it helps! >>> > >>> > On Jun 3, 11:02 am, Sujay Krishna Suresh <sujay.coold...@gmail.com> >>> > wrote: >>> > >>> > > if i were u & if my app already interacts with the web then i'll >>> initially >>> > > hit a url from the app with may the phone's unique id... >>> > > i'll take care of everythin else at the web-side... this will make >>> sure that >>> > > there's not much change in my app's performance... >>> > > but i dont exactly no if an android phone has any sort of unique >>> id.... & >>> > > the possibilities to get such an id... >>> > > if not the id u may go for the google acc registered with the >>> phone... but >>> > > this may have some limitations... >>> > >>> > > On Wed, Jun 3, 2009 at 3:20 PM, aayush <abhatnagar192...@gmail.com> >>> wrote: >>> > >>> > > > okay..thanks for the answer Marc. >>> > >>> > > > For #1 i believe i need to create my own certificate by using the >>> > > > keytool utility and sign it as you suggest. >>> > >>> > > > Time based is my only requirement..as of now. Usage based is not a >>> > > > priority for me. >>> > >>> > > > aayush >>> > >>> > > > On Jun 3, 2:34 pm, Marc Lester Tan <mail...@gmail.com> wrote: >>> > > > > Hi, >>> > >>> > > > > # 1 - I believe you can do this when signing your certificate. >>> > > > > # 2 - you can store the number of times your app is invoked on >>> the >>> > > > > Preferences then just check if it already exceeds your limit but >>> then it >>> > > > can >>> > > > > easily be broken by just uninstalling the application and >>> download it >>> > > > again. >>> > > > > I haven't tried this yet. Just my idea. >>> > >>> > > > > Marc >>> > >>> > > > > 2. Usage based ( 100 invocations of the application). >>> > >>> > > > > On Wed, Jun 3, 2009 at 5:24 PM, aayush < >>> abhatnagar192...@gmail.com> >>> > > > wrote: >>> > >>> > > > > > Hello list.. >>> > >>> > > > > > I had a query: >>> > >>> > > > > > If i wish to attach an evaluation license to my android >>> application, >>> > > > > > how can that be achieved ? As for example, i may want to >>> provide an >>> > > > > > evaluation license based application that expires in one of the >>> > > > > > following ways: >>> > >>> > > > > > 1. Time based (30 days etc) >>> > >>> > > > > > 2. Usage based ( 100 invocations of the application). >>> > >>> > > > > > Once the application's license expires, i need to restrict >>> access to >>> > > > > > it from the user. >>> > >>> > > > > > Thanks in advance.. >>> > >>> > > > > > Best Regards >>> > >>> > > > > > aayush >>> > >>> > > -- >>> > > Regards, >>> > > Sujay >>> > > George Bernard Shaw< >>> http://www.brainyquote.com/quotes/authors/g/george_bernard_shaw.html> >>> > > - "A government that robs Peter to pay Paul can always depend on the >>> > > support of Paul." >>> > >>> > >>> >>> >>> >> >> >> -- >> Regards, >> Sujay >> H. L. Mencken<http://www.brainyquote.com/quotes/authors/h/h_l_mencken.html> >> - "Nobody ever went broke underestimating the taste of the American >> public." > > > > > -- > Regards, > Sujay > Mark Twain <http://www.brainyquote.com/quotes/authors/m/mark_twain.html> - > "There is no sadder sight than a young pessimist." -- Regards, Sujay H. L. Mencken <http://www.brainyquote.com/quotes/authors/h/h_l_mencken.html> - "Nobody ever went broke underestimating the taste of the American public." --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
