1. A computer-implemented method, comprising: generating a first light emission from a first light emitter, the first light emitter being arranged on a perimeter of a detection area; obtaining first sensor information of a first set of light receivers, the first set of light receivers being configured to detect the first light emission from the first light emitter; generating a second light emission from a second light emitter, the second light emitter being arranged on the perimeter of the detection area, the second light emitter being offset from the first light emitter; obtaining second sensor information of a second set of light receivers, the second set of light receivers being configured to detect the second light emission from the second light emitter; calculating a first area based at least in part on the first sensor information, wherein the first sensor information indicates that at least one of the first set of light receivers failed to detect the first light emission from the first light emitter; calculating a second area based at least in part on the second sensor information, wherein the second sensor information indicates that at least one of the second set of light receivers failed to detect the second light emission from the second light emitter; and calculating an area of interaction within the perimeter of the detection area based at least in part on the first area and the second area.