[android-developers] Re: Encryption

But Google's 'take' on it does not say that there already IS such a
thing: it says you can make an approximation to it, an approximation
that is probably what you really want in the first place. It also
warns against confusing a "unique ID for each Android device" with the
number returned by TelephonyManger.getDeviceId(), which is unique only
for phones. Worse yet, the API does not work reliably even when you
are on a phone, and requires an irritating permission.

But these last two problems are Google's fault: I don't know what they
were thinking by requiring READ_PHONE_STATE permission for this.
Somebody probably thought it was insecure to allow it, but I don't
agree. Besides: putting this under the umbrella of READ_PHONE_STATE
suggests that the latter is too coarse a permission in the first
place.

As for not working reliably, who if not Google was/is in the position
to enforce this across all OEMs implementing it? Yet by their own
admission, it did not happen.

Finally, what I find most interesting in the article is how to make
what most developers probably really want: a unique identifier for
each installation of their application on whatever device it is
installed on. They have valuable hints at that article for making
exactly that.

On Sep 2, 8:47 am, Nikolay Elenkov <nikolay.elen...@gmail.com> wrote:
> On Sat, Sep 3, 2011 at 12:39 AM, Gabriel Marchant <marchan...@gmail.com> wrote:
> > Ok Nikolay... I heard about a unique ID for each Android device. Do you know
> > something about it?
>
> Yes, there is such thing (universally) :)
>
> Google's take on this:
>
> http://android-developers.blogspot.com/2011/03/identifying-app-instal...

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