Steerable viewing system

A steerable viewing system comprising:

• a steerable filter for placing in front of a display area of a display device, the steerable filter including a plurality of superimposed liquid crystal display (LCD) screens, each LCD screen including a plurality of LCD elements controllable between a transmissive state and a light-blocking state;
• and
• a controller operatively coupled to the LCD screens of the steerable filter and configured to, using data indicative of a first position relative to the display area of the display device, cause the states of the LCD elements of the LCD screens to cooperatively define:
• a first viewing passage extending through the steerable filter and permitting viewing of the display area from the first position through the steerable filter, the first viewing passage being defined by LCD elements of the LCD screens in the transmissive state;
• and
• a first viewing barrier adjacent the first viewing passage and preventing viewing of the display area from a second position different from the first position through the steerable filter, the first viewing barrier being defined by LCD elements of the LCD screens in the light-blocking state.