Bluetooth scanning software will only list one of the devices if more than one device in range shares the same device information when the devices are in Discoverable Mode (specificaly the same Address) The new version 0.5 runs scans much faster, which also allows for more Device Names to be resolved during scans. SpoofTooph is designed to automate spoofing or cloning Bluetooth device Name, Class, and Address. Cloning this information effectively allows Bluetooth device to hide in plain site.
Source: https://thehackernews.com/2012/03/spooftooph-05-automate-cloning-of.html