Just find a cheap, battery-operated sensor bar online. Practically any will do, as the sensor bar is just a pair of infrared LED arrays (or even single LED's).
Windows 10 Pro x64 | i7-9700K @ 4.6-5.0GHz | MSI Z370 Gaming Plus | MSI RX 5700 8GB Factory-OC | 16 GB DDR4-3000
