Yes Hadi, it's sort of an intrusive way to solve the problem but... at the
moment, I don't see any other option.
Thanks for the idea.

Kris, I don't have any additional infrastructure. At the moment, there's a
webservice for mobile, a webservice for desktop, and both communicates with
a server. The mobile version needs to have less security policies, for
usability questions, so on a desktop it is easier attacked.

Kevin, as mobile devices I'm talking about smartphones and tablets. The
picture idea can be an answer. It's a bit intrusive, but more difficult to
be faked.

Thanks you all for the answers.

--
Lucas Palma



*"If you are patient in one moment of anger, you will escape a hundred days
of sorrow."*
*- Chinese Proverb*



On Fri, Oct 5, 2012 at 4:27 PM, Kevin Chadwick <[email protected]>wrote:

> > There's some way to identify that the user is using a mobile device, not
> a
> > desktop?
> > Like, I have an application, which communicates with a web service, but
> > anyone could access it through a desktop, and simulates that is using a
> > mobile device.
> >
>
> I was thinking check the width, set viewport check again.
>
> What do you class a tablet as? desktop or mobile. The main difference is
> usually a small screen. Resolution may be going crazy like
> megapixels due to marketers, just like megapixels have no effect with
> small lenses, resolution has no effect with the media both a phone and
> it's connection can handle for the foreseeable future, causing
> unnecessary problems.
>
> > I don't think that "user-agents", "css" and things like that will help,
> > since they can be forged.
>
> You could try taking a picture and seeing the reflection in the users
> eye, but even that could be fed false data. The user is generally King.
>
> --
> _______________________________________________________________________
>
> 'Write programs that do one thing and do it well. Write programs to work
> together. Write programs to handle text streams, because that is a
> universal interface'
>
> (Doug McIlroy)
> _______________________________________________________________________
>
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