Yes, using Arccos with clubs that do not have sensors attached would cause Arccos to miss shots and will reflect inaccurate information about your game. 

In order to record shots, at least 8 sensors plus a putter sensor must be paired. If you signed up to Arccos through Ping, TaylorMade or Cobra, sensors will be sent to you to complete your set of sensors!

If you have more than 14 clubs that you regularly play with and want to purchase extra sensors, you can purchase them from our website.