I agree with others who are saying that waving your arm can quickly become tiring, but maybe you could point this device on a table so you could rest your hand

I agree with others who are saying that waving your arm can quickly become tiring, but maybe you could point this device on a table so you could rest your hand on the table (or surface of the laptop) like using a mouse and only your index finger would be in the air. I think that way it would be less tiring.