The neural interface-tracking technology developer has increased its overall funding to $67m following a GV-led funding round that included Amazon's Alexa Fund.

GV, an investment subsidiary of internet and technology group Alphabet, has led a $28m funding round for US-based neural interface technology developer Ctrl-Labs, VentureBeat reported on Friday.

Alexa Fund, the venture capital vehicle for US-based e-commerce and cloud computing company Amazon, also took part in the round, as did Lux Capital, Spark Capital, Matrix Partners, Breyer Capital and Fuel Capital.

Ctrl-Labs is building a watch-like armband that captures the information coming out of the muscles by reading and decoding the…