Stores are spending lots of time and money trying out new, fancy technologies such as touchscreen mirrors in changing rooms and robo-assistants out in the racks to get consumers to buy more. Shoppers couldn’t care less. Lowe’s Cos., the home improvement store, has a “Holoroom” that lets customers design spaces with virtual reality goggles. Nordstrom Inc. has a chatbot, an automated substitute for a human store assistant, meant to provide shoppers (both online and in-store) with gift ideas during the holidays. Rebecca Minkoff LLC, the women’s clothing retailer, has futuristic walls and mirrors you can interact with—all in a bid to facilitate the shopping experience.