TODAY: Amazon offers two-day shipping. TOMORROW: Google has a project that will offer same-day shipping. SOON: RFID tags enable us visit a store, place goods in our reusable bags and then walk out of the store -- automatically purchasing the items in your bags the moment you leave the store via your digital wallet (Google Wallet, PayPal, RFID enabled credit cards etc.) stored on your "smart" device (phones, watches, glasses etc.).
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