Computerized system operative to perform selectable system-actions responsive to user input, the system being accessible to non-literate users via a touch screen defining touch screen locations respectively corresponding to the selectable system-actions, the touch screen being operative to detect and distinguish between first and second gestures, the system comprising a processor-controlled touch-triggered actor which, responsive to at least each first gesture applied by end-user to an individual location within the touch screen, from among plural touch screen locations, performs individual action/s which corresponds to the individual location; and a processor-controlled touch-triggered oral presenter which, responsive to at least each second gesture applied by end-user to an individual location within the touch screen, from among the plural touch screen locations, presents an oral characterization of individual action/s which corresponds to said individual location.