Android Question PhoneID empty

[nibbo]

Hi All

I am trying to find a way to allow devices to access our system using something unique about the device...
Ideally the cell number, SIM No or IMEI code, basically anything that would be unique to users device.
The reason I need this is to allow temporary access to our apps without having to set up loads of user accounts for authentication.

Unfortunately PhoneID does not appear to work on my test device (and I assume many modern phones), is there any other way get the cell number or any of the method to uniquely identify a device/user?

Thanks

 

[Brian Dean]

Here is a suggestion that might work, although there is one obvious flaw.

You can generate a random value at installation time. Either save the DateTime.Now value (installation time at millisecond resolution) or generate a code (using a string of only six random upper/lower/numerical characters gives trillions of combinations). Either of these will produce a "key" that should uniquely identify the source device.

The obvious flaw is that, if the user uninstalls and re-installs the app, their unique identity will be lost. But maybe you can live with that.

 

[eps]

Did you see this? https://www.b4x.com/android/forum/threads/android-device-unique-id-alternative-to-phoneid.14759/

 

[nibbo]

Did you see this? https://www.b4x.com/android/forum/threads/android-device-unique-id-alternative-to-phoneid.14759/

I did find that thread but as the sentence in the first post says, this tutorial is no longer relevant I iscounted it.
Reading through it further there does not seem to be an obvious reliable way unless I missed something?

 

[TILogistic]

Test:

Dim p As Phone
IdDevice = p.GetSettings("android_id")

Get unique id for user

According to Android rules, We cannot use android_id or device_id or mac_address in new version android As well, Use sms is not good idea for this Please suggest to me for use unique id in each device for user I need to it for use payment and other Thanks

www.b4x.com

Note:
It works on versions 10 and 11, but I have NOT tested it on many brands of mobile phones or tablets.

 

[nibbo]

Thanks oparra, that seems to return something that looks like it could be unique...
I will test a few devices and see how we get on. ?

 

[eps]

I did find that thread but as the sentence in the first post says, this tutorial is no longer relevant I iscounted it.
Reading through it further there does not seem to be an obvious reliable way unless I missed something?

It mentions using an advertising ID - not sure if that is relevant to your project or not or creating your own unique ID on the first ever execution.

 

[TILogistic]

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

www.b4x.com

Update:

Additional changes in Android 10 that are not related to the targetSdkVersion value:

• StartActivity from a service will not work if there is no visible activity. As a workaround you can request the special "draw over apps" permission: https://www.b4x.com/android/forum/threads/draw-on-top-of-other-apps-permission.90513/
  It will allow StartActivity to work.
• Most of the device unique ids are not exposed. Two are available:
  Advertising id: https://www.b4x.com/android/forum/threads/101050/#content
  Phone.GetSettings ("android_id") - https://www.b4x.com/android/forum/threads/get-unique-id-for-user.124396/#content