To make those bricks-and-mortar shops more interesting, experts envision a high-tech future that wows shoppers with fun technologies they want to play with and makes shopping easier.

One of these ideas is the concept of the endless aisle, where customers shop at a kiosk and can purchase items that are no longer in-stock or aren't sold in stores. Bruce Molloy, vice president of global business development at Customer Mobile, predicted this technology will go one step further in 25 years, becoming what he's dubbed the "wall mall."

Through this technology, Molloy said, retailers could use a single wall to showcase all of their inventory inside stores, to target customers looking for a particular item in a different color, or outside their doors, to draw shoppers in. They could even set up an entire storefront with just one wall.

"This is the new window shopping," he said.

Retailers are also experimenting with the idea of virtual stores, where by walking and moving their smartphones, shoppers can browse virtual aisles and add items to their cart by touching the screen.

Through this technology, Chinese online grocery store Yihaodian in 2012 opened 1,000 virtual stores in one day, which consumers could "enter" via the store's app when they stood in a tagged area. Yihaodian saw its revenue increase 17 percent over a three-month period after the campaign was launched, a spokeswoman said.

Tesco, which is experimenting with ways for consumers to use Google Glass to scan barcodes on in-home grocery products and add them to their virtual shopping carts, is also looking at ways to innovate the in-store experience. The grocer has tested virtual supermarkets where, by using their smartphones to scan QR codes on picture displays, shoppers instantly add the items to their online carts.