Viewing angle-based content presentation

A non-transitory computer readable medium storing instructions operable to cause one or more processors to perform operations comprising:

• determining, based on a first ultrasonic signal transmitted from a first user device at a first location within a physical location that includes a three-dimensional glasses-less display, a first viewing angle with respect to the three-dimensional glasses-less display of a first set of conference participants associated with the first user device;
• determining, based on a second ultrasonic signal transmitted from a second user device at a second location within the physical location, a second viewing angle with respect to the three-dimensional glasses-less display of a second set of conference participants associated with the second user device;
• determining first content to output at the three-dimensional glasses-less display for viewing by the first set of the conference participants;
• determining second content to output at the three-dimensional glasses-less display for viewing by the second set of the conference participants;
• determining to limit visibility of all content including the first content and the second content for a third viewing angle with respect to the three-dimensional glasses-less display based on a third location corresponding to the third viewing angle including a window of the physical location, wherein one or more conference participants other than of the first set of conference participants or the second set of conference participants are located within the third location;
• and
• causing, based on the first viewing angle and the second viewing angle, the three-dimensional glasses-less display to simultaneously output the first content and the second content in a manner that limits visibility of the first content to the first set of the conference participants and visibility of the second content to the second set of the conference participants.

A system, comprising:

• one or more memories;
• and
• one or more processors configured to execute instructions stored in the one or more memories to:
• determine, based on a first ultrasonic signal transmitted from a first user device at a first location within a physical location that includes a three-dimensional glasses-less display, a first viewing angle with respect to the three-dimensional glasses-less display of a first set of conference participants associated with the first user device;
• determine, based on a second ultrasonic signal transmitted from a second user device at a second location within the physical location, a second viewing angle with respect to the three-dimensional glasses-less display of a second set of conference participants associated with the second user device;
• determine first content to output at the three-dimensional glasses-less display for viewing by the first set of the conference participants;
• determine second content to output at the three-dimensional glasses-less display for viewing by the second set of the conference participants;
• determine to limit visibility of all content including the first content and the second content for a third viewing angle with respect to the three-dimensional glasses-less display based on a third location corresponding to the third viewing angle including a window of the physical location, wherein one or more conference participants other than of the first set of conference participants or the second set of conference participants are located within the third location;
• and
• cause, based on the first viewing angle and the second viewing angle, the three-dimensional glasses-less display to simultaneously output the first content and the second content in a manner that limits visibility of the first content to the first set of the conference participants and visibility of the second content to the second set of the conference participants.