cd4a8b2a_acitive__Moving_the_goalposts___Resistive_touchscreen
[0] Possibility for multi-touch [Capacitive touchscreen] Depends on implementation and software, but used in the iPhones and on many (though not all) Android smartphones. [Resistive touchscreen] 
None, without re-engineering the way a resistive screen is wired into a device's electronics.
Resistive vs Capacitive: Moving the goalposts?
Resistive touchscreen