I Have Lots of Wtf Moments

Has anyone had this happen to them? I can't count the number of times I've walked up to automatic doors and they don't open. I wave my hand, then walk away and try again..nothing. I've hopped on the floremat thinking it might be weight controlled (I'm well weighted so that shouldn't be the cause). I do both, jump and wave my hands like a mad woman. Then right when I'm ready to go back to the car, someone comes up behind me and it automatically open for them. WTF?