A computing device receives information content, which is rendered in a predefined display area of the display. When the information content satisfies predefined conditions privacy requirement), the computing device generates a shielding layer for the information content before rendering the shielding layer and displays the shielding layer on top of the display area such that the information content becomes invisible. Subsequently, the computing device receives a shielding layer hiding instruction from a user of the computing device. In response to the shielding layer hiding instruction, the computing device hides the shielding layer from the display area and restores the shielding layer on top of the display area after a predefined hiding period in accordance with a shielding layer hiding mechanism.