They’re  teching  things up a notch.  Costco, known for offering its warehouse club members decent deals on bulk buys sans the bells and whistles of digital devices, is now introducing scanning technology and digital membership cards to improve customer experience.  It’s an automated miracle.  While a little late to the gadgets game, Costco joins a slew of retailers — from NYC-area supermarkets such as ShopRite, which recently rolled out  a fleet of AI-powered shopping carts , to nationwide