An apparatus (10, 20), comprising: means (12, 14, 16, 18) for determining a location of a hand-held electronic device; means (12, 14, 16, 18) for rendering visual augmented reality content for display on a display of the hand-held electronic device, based on the location of the hand-held electronic device; means (12, 14, 16, 18) for estimating a location of a user of the hand-held electronic device, different from the location of the hand-held electronic device; means (12, 14, 16, 18) for rendering aural augmented reality content for output to the user of the hand-held electronic device, based on the location of the user; means (12, 14, 16, 18) for determining that the location of the hand-held electronic device is in a virtual space (100, 110, 120) that is demarcated by a virtual boundary (104, 114, 124); means (12, 14, 16, 18) for determining that the hand-held electronic device has crossed the virtual boundary without the location of the user crossing the virtual boundary, such that the location of the hand-held electronic device is outside the virtual boundary and the location of the user is inside the virtual boundary; means (12, 14, 16, 18) for continuing to render aural augmented reality content associated with the virtual space for output to the user, based on the location of the user being inside the virtual boundary; means (12, 14, 16, 18) for determining that the location of the user has crossed the virtual boundary, such that the location of the user is outside the virtual boundary; and means (12, 14, 16, 18) for altering or ceasing the rendering of aural augmented reality content in response to determining that the user has crossed the virtual boundary. means (12, 14, 16, 18) for determining a location of a hand-held electronic device; means (12, 14, 16, 18) for rendering visual augmented reality content for display on a display of the hand-held electronic device, based on the location of the hand-held electronic device; means (12, 14, 16, 18) for estimating a location of a user of the hand-held electronic device, different from the location of the hand-held electronic device; means (12, 14, 16, 18) for rendering aural augmented reality content for output to the user of the hand-held electronic device, based on the location of the user; means (12, 14, 16, 18) for determining that the location of the hand-held electronic device is in a virtual space (100, 110, 120) that is demarcated by a virtual boundary (104, 114, 124); means (12, 14, 16, 18) for determining that the hand-held electronic device has crossed the virtual boundary without the location of the user crossing the virtual boundary, such that the location of the hand-held electronic device is outside the virtual boundary and the location of the user is inside the virtual boundary; means (12, 14, 16, 18) for continuing to render aural augmented reality content associated with the virtual space for output to the user, based on the location of the user being inside the virtual boundary; means (12, 14, 16, 18) for determining that the location of the user has crossed the virtual boundary, such that the location of the user is outside the virtual boundary; and means (12, 14, 16, 18) for altering or ceasing the rendering of aural augmented reality content in response to determining that the user has crossed the virtual boundary.