Milkshake I appreciate your involvement, but I don't think that you have too clear what "security breach" means, so I suppose that you don't work in the IT world from longtime. What you describe is, eventually, a privacy issue, since you let other players know that you are logging from mobile (and you maybe don't want to show it to the other players).
Anyway, as already stated, it is not too different from the email sent with the automatic note insertion "Sent from my Iphone" or "Sent from my iPad".
Kind regards