Android Question a strange question about android ID

[yhyzhj]

I use this code to get android ID.

Dim p as phone
Dim id as string
id=p.GetSettings("android_id")

but the id is difference from by ADB（adb shell settings get secure android_id）
on android 6.0 - 7.0, the IDs are the same. on android 8.1 - 9.0, the IDs are difference.
i wnat to know why?

 

[MikeSW17]

unique IDs and android_id have been discussed at length before e.g. https://www.b4x.com/android/forum/threads/get-unique-id-for-user.124396/#content
The forum search reveals much more.
In persuit of 'privacy' Android keeps changing the rules.