Detecting when user is calling himself

[zittix_all@xxxxxxxxxx (Mathieu Monney)]

> Hi all
>
> I'm trying to figure out how to detect if the user is trying to call
> himself because it is making some weird unwanted things on my UI when
> user do this. Any idea?
>
> Thank you.
>
> Regards,
>
> Mathieu Monney