Google has got approval from  the US FCC to deploy a radar-based gesture-sensing haptic touch device in the 57-64GHz band at power levels consistent with ETSI standards. Concerns had ben expressed by Facebook that the higher power levels would raise interference issues. After discussions, the original power levels proposed by Google were lowered. The sensor ...

This story continues at Google gets FCC approval for haptic touch sensor

Or just read more coverage at Electronics Weekly