Some amateur radio TNCs (Terminal Node Controllers) and satellite ground station equipment use IrDA for short-range telemetry.
(ranging from 0.6 to 1 meter) to help you align the adapter's "point-and-shoot" infrared beam with the target device. StarTech.com Technical Specifications Fast USB 2.0 Infrared Adapter up to 4Mbps - Coolgear u2irda mini 4 mbps fir usb irda 20 portable
While newer technologies like Bluetooth and Wi-Fi have largely replaced consumer infrared, the U2IRDA Mini Some amateur radio TNCs (Terminal Node Controllers) and