We can’t find anyone else in our archive who’s made a Bluetooth dongle in this way, but we’ve certainly seen sniffing of HCI commands to reverse engineer a speaker’s communications.

The Satechi SM1 keyboard comes with macOS and Windows keycaps as well as an RF wireless dongle and ... [+] USB-C cable. The Satechi SM1 can connect via Bluetooth with support for two separate devices.

The Alogic Echelon wireless Bluetooth keyboard comes in two flavors ... comes with both Bluetooth and low-latency 2.4GHz RF dongle connectivity. The PC kit is available as a combo unit with ...