This is not scary: Amazon hopes to ship items to you before you've ordered them.
It actually isn't scary, it makes more sense than you'd first thing but that first thinking you did either went the 1984 Big Brother route or the Doctor Who timey-wimey way. The truth is boringly in the middle, but:
The Seattle-based giant has patented a method of shipping products before customers even place an order. In December, Amazon was granted [a patent] for what the company describes as “anticipatory shipping,” or a way of initiating the delivery process before a customer even clicks buy. The idea is to cut down delivery time and, possibly, make it even less necessary to visit brick-and-mortar stores. The document describes a process for boxing and shipping items the company expects customers in a specific area will want — based on previous orders, product searches, wish lists or the contents of a shopping cart before checkout.