shopping carts

OK, this is kind of a stupid topic, but it still bugs me.  You know when you go to a store, and you have to put in a quarter for the cart?  I pay for everything with debit these days, but still, chances are I have a quarter in my pocket, so I get a cart.  The other day though, I was at Zellers, and I was there to buy an 18 kilogram box of cat litter (it's a good anti-slip for the ice on the driveway).  Anyway, since it's 18 kilos, I figured I should get a cart.  I had to insert a dollar though!  I didn't have a dollar on me, because I 'pay cash without carrying cash.' these days.  They should develop something on carts that you swipe your debit card and it puts a pending charge on your account until you return the cart.  Yeah, actually, that's a good idea... ok, if somebody actually invents this, remember where you got the idea!

beijos