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Groups > comp.mobile.android > #37302

Re: Android 6

From Daniel James <daniel@me.invalid>
Newsgroups comp.mobile.android
Subject Re: Android 6
Date 2017-01-04 13:40 +0000
Organization A noiseless patient Spider
Message-ID <VA.00000c25.19a8c3d6@me.invalid> (permalink)
References (6 earlier) <449f715e-6c60-7051-98a5-bed4624d9a68@arnowelzel.de> <VA.00000c21.0051986f@me.invalid> <98f471b5-835a-7fd5-698a-cdc0e88929c2@arnowelzel.de> <VA.00000c23.0503f1e5@me.invalid> <60f194ae-3c1d-5179-2ade-25c34f5528ee@arnowelzel.de>

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In article <60f194ae-3c1d-5179-2ade-25c34f5528ee@arnowelzel.de>, Arno 
Welzel wrote:
>> However, I'd say that some of an app's data is internal in nature,
>> but some is external, and in that latter case the app developer
>> *should* give the user the option to store it on external media.
> 
> The problem is once again - security.
> 
> As soon as you allow to store *any* data on an SD card this also
> means that it is readable by *anyone* and not only the app involved.

Yes, of course ... but we're talking about a removable SD card, here. 
There is NO POINT in trying to implement security within Android when 
the user can take the card out and mount it in a PC and read/write 
everything anyway.

If you care about security in that case you simply encrypt the data.

> Of course one could say, that it is the users responsibility to deal
> with this. But how many people do really understand the implication of
> putting data on a media which can be read by any app with storage
> permission?

I think that the fact that the card is removable sends a pretty strong 
signal to anyone who understands anything about data.

>> In the (special) case of the camera app there will be settings --
>> e.g. the flash on/off/auto setting -- that apply to that app on
>> that device and don't need to be accessed by anything else, but
>> there are also the actual photographs that other apps might
>> want/need to read. 
> 
> That's the reason why camera apps usually allow to store photos on
> the SD card as well (or the "internal" media storage) so other apps
> like "gallery" apps or e-mail apps can read them.

Your comment seems a little confused ...

Android apps can access the images in the DCIM directory in internal 
storage without any special permission, but can only access images in 
the DCIM directory on an SD card if they have permission to read 
external storage.

My point, again, is that the files on external storage can always be 
read by mounting that storage on another device (PC, etc) so requiring 
special permission for that is daft. Files in internal storage can only 
be read by Android apps, so there would be some point in requiring 
permission for that, but ironically none is needed.

>> An Android device's internal memory is a finite resource, and
>> should be used sparingly. Apps should make sure that where an SD
>> card is available they make provision for using it.
> 
> No - only if it makes sense. Putting *everyhing* on an SD card just
> because it is there, makes no sense. If you need this, then format the
> SD card in Android as "internal memory" - then it is also protected
> agains unauthorized access BTW.

I wrote "make provision for using it", not "force the user to use it all 
the time". My point is that only the user knows what meets his own 
requirements, and the user should be in a position to decide how the 
available storage should be used. That requires app writers to write 
their apps so that they give the user the choice.

Formatting the SD card as "internal" storage is not the answer if the 
user wants to be able to transfer data by removing the card and reading 
it in another device.

It's not an everyday event, but when my first Android phone failed (the 
screen suddenly decided to display an intricate pattern of many colours, 
instead of text) I was very grateful for the fact that all my data were 
on an SD card because (a) some data had not yet been backed up, and (b) 
I could return the phone for repair without worrying too much about 
personal data being left in memory (it was impossible to do a factory 
reset without being able to read the screen).

-- 
Cheers,
 Daniel.
 





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Thread

Android 6 Bill <Billaboard@gmail.com> - 2016-12-22 17:21 +0000
  Re: Android 6 The Real Bev <bashley101@gmail.com> - 2016-12-22 10:00 -0800
    Re: Android 6 Bill <Billaboard@gmail.com> - 2016-12-23 00:23 +0000
      Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-22 19:30 -0500
        Re: Android 6 Bill <Billaboard@gmail.com> - 2016-12-23 12:42 +0000
          Re: Android 6 tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2016-12-23 11:58 -0500
            Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-29 13:43 +0100
              Re: Android 6 Daniel James <daniel@me.invalid> - 2016-12-30 15:34 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-30 22:33 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2016-12-31 13:27 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-04 08:59 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-04 13:40 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-11 09:00 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-15 18:23 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-15 21:20 +0100
                Re: Android 6 AL <45364747@invalid.com> - 2017-01-04 10:06 -0700
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-11 09:00 +0100
                Re: Android 6 tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2017-01-05 01:34 -0500
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-07 14:14 +0000
                Re: Android 6 tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2017-01-07 13:09 -0500
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-08 18:18 +0000
                Re: Android 6 tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2017-01-08 15:42 -0500
                Re: Android 6 The Real Bev <bashley101@gmail.com> - 2017-01-08 17:11 -0800
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-08 20:19 -0500
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-09 23:55 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-11 18:07 +0100
                Re: Android 6 Frank Slootweg <this@ddress.is.invalid> - 2017-01-08 21:34 +0000
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-09 23:55 +0000
          Re: Android 6 Joerg Lorenz <hugybear@gmx.ch> - 2016-12-24 10:49 +0100
  Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-22 23:55 +0100
    Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-22 19:15 -0500
      Re: Android 6 Joerg Lorenz <hugybear@gmx.ch> - 2016-12-23 05:46 +0100
        Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-23 00:15 -0500
      Re: Android 6 Dave Higton <dave@davehigton.me.uk> - 2016-12-23 17:11 +0000
        Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-23 12:43 -0500
          Re: Android 6 Dave Higton <dave@davehigton.me.uk> - 2016-12-23 21:22 +0000
            Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-24 14:29 -0500
              Re: Android 6 Dave Higton <dave@davehigton.me.uk> - 2016-12-25 11:10 +0000
                Re: Android 6 Piet <www.godfatherof.nl/@opt-in.invalid> - 2016-12-25 12:37 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-25 11:18 -0500
                Re: Android 6 Dave Higton <dave@davehigton.me.uk> - 2016-12-25 20:28 +0000
          Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-29 12:02 -0500
            Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-29 23:45 +0100
              Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-29 18:02 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-30 22:24 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-31 11:55 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-04 09:04 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-04 10:14 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-11 18:11 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-11 13:05 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-13 17:23 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-16 15:35 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-17 05:39 +0100
              Re: Android 6 Daniel James <daniel@me.invalid> - 2016-12-30 15:34 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-30 22:26 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2016-12-31 13:27 +0000
                Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-31 11:55 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-04 09:11 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-04 13:40 +0000
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-04 10:14 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-11 18:12 +0100
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-11 13:05 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-13 17:24 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-15 18:23 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-15 21:30 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-16 15:42 +0000
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-16 15:35 -0500
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-17 05:44 +0100
                Re: Android 6 Daniel James <daniel@me.invalid> - 2017-01-17 17:47 +0000
                Re: Android 6 Bill <Billaboard@gmail.com> - 2017-01-01 01:05 +0000
                Re: Android 6 tlvp <mPiOsUcB.EtLlLvEp@att.net> - 2017-01-02 02:08 -0500
                Re: Android 6 David Taylor <david-taylor@blueyonder.co.uk.invalid> - 2017-01-02 08:01 +0000
                Re: Android 6 nospam <nospam@nospam.invalid> - 2017-01-02 08:51 -0500
                Re: Android 6 Bill <Billaboard@gmail.com> - 2017-01-02 20:41 +0000
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-04 09:18 +0100
                Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2017-01-04 09:14 +0100
          Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-29 14:05 +0100
      Re: Android 6 nospam <nospam@nospam.invalid> - 2016-12-29 12:02 -0500
        Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-29 23:46 +0100
          Re: Android 6 Dave Higton <dave@davehigton.me.uk> - 2016-12-31 20:18 +0000
      Re: Android 6 Arno Welzel <usenet@arnowelzel.de> - 2016-12-29 13:47 +0100

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