Without arguing for or against an eraser end cap, it strikes me that the lightning connector could have provided power and communications with an active cap. I'd also like to be able to tap the pen on an end cap absent mindedly a few times (as I do with a real pencil, active end cap not necessary though) and have Siri come up and ask, "penny for your thoughts?" (Okay, I should get out more often.) Edit: have read more of the thread now and note similar comments.
11/21/15 at 2:03am