There are many camera accessories that address the constraints of smartphone photography, but the Pictar Pro manages to distinguish itself from the rest by focusing primarily on ergonomics. Suitable for the product photographers who crave physical controls, the Pictar Pro features many of the trappings of analog cameras of the past.
This is then paired through an ergonomic physical shape that makes the product more comfortable to support while taking photos. Unlike another smartphone peripherals, the Pictar Pro doesn’t use a physical or Bluetooth connection.
Instead, it connects using a high-frequency dual tone speak from check your grip on the phone. These high-frequency dual tones make allow the grip’s physical buttons to cooperate with the product, in the same way, touching the screen would.
References: kickstarter & cnet