Remote access to patient records and security of android apps

[Roland Perry]

In article 
<CAK0b=2e9KsiPJi4CD_tH0FdxqUH7rO0oN278AsOW3yzSDG6YwQ at mail.gmail.com>, 
Tony Naggs <tony.naggs at googlemail.com> writes
>In principle an Android tablet could access a smartcard, as the SIM 
>card in an Android phone is a form of Smartcard - but I have not 
>noticed any tablet computers advertised with Smartcard slot.

Many tablets have a SIM socket (for data access). But what credentials 
from the SIM might a application be looking for, and why couldn't a 
patched copy of Android spoof it?

>I am also concerned about how whether the data is securely encrypted 
>when sent over the the WiFi or 3G data network.

Couldn't the Android App have its own encryption layer?
-- 
Roland Perry