You have to be willing to hold yourself to the PO system, though; you won't know until you try.
better they track me so they put stuff i buy up front rather than me having to walk through the whole store
You think they'll bring the products you want to the front of the store just because they see that you buy them a lot? That's naively cute. It's also dead wrong.
They want you to walk through the whole store. That's how they convince you to spend more. The 2 items you're there for are almost guaranteed to be at the back of the store, on opposite sides, once they start tracking you, for that very reason. Enjoy.
Of course, they do the same thing now based entirely on sales records. This will just make it more efficient by allowing them to determine where mot people travel before finding what they're looking for, so they can optimize placement of high-margin impulse buys for customers who aren't walking the entire store.
I'm fine with this, anyway, as I've started running my household budget the same way I run my business budget: a PO for every purchase. For household, I do attach a discretionary budget to each PO, so if I see some new product I want to try, I can, but I can't fill my cart with every piece of crap they line the aisles with. The only exception to this is entertainment; if I'm actually setting out to blow money on shit I don't need, trust me when I say I know how to do that.
It hasn't killed the fun of shopping, either; I still shop. A lot. I just don't buy unless I've filled out a household PO, which actually makes the shopping trip more enjoyable, as I don't have to think about budget or if I have room in the car for whatever I'm looking at; it simply doesn't matter, it's not coming home with me today, anyway. If I absolutely must have it right now, I can always talk to my wife and we can agree on a provisional PO for that item. That works both ways, too, and has stopped her from coming home with several-hundred dollar purses on a whim (while giving me a list of awesome gift ideas); and she knows all she really has to do is come home, fill out a PO, and go buy it, so if she really wanted it that badly, she would.
Try it. You might get into it.
It'll be interesting, when these hit the market, to see how they fare in terms of longevity. I'm sure they perform great, but what good is that if you have to rebuild it every few thousand miles?
Did you think the valves were individually operated by servos? Pull your valve cover and take a look sometime; it's at most a dozen bolts, most likely all 10mm.