In the not-too-distant future, grocery shoppers wearing Google Glass will see coupons for a new cereal flash before their eyes as they search for Cheerios, while others browsing the dairy section will have information about the health benefits of soy milk pop up automatically on their iPads.
Dozens of big-name retailers -- including Bloomingdale's, Victoria's Secret, Wal-Mart and Target -- already are experimenting with virtual reality, a computer-simulated 3-D environment viewed through a computer screen or wireless glasses, or augmented reality, which uses technology to alter the physical environment by adding sound, images or words to enhance the real-world experience.
Give it a few more years, industry experts say, and the once ho-hum trip to the store will be radically different.
For consumers, this is mostly good news, experts say. The technology will give shoppers the power to make better buying decisions and eliminate some shopping irritations. Retailers are using virtual reality to improve store layouts, and companies are creating augmented reality applications for in-store navigation, so shoppers aren't searching up and down aisles for five of the 10 ingredients to make dinner.
"In five years, you will not walk into a retailer and get lost," said Barbara Barclay, general manager of North America for Tobii, an eye-tracking technology company with offices in Mountain View, Calif. "They'll know who you are and what your last shopping experience was. They will know where you're looking on a shelf. The whole shopping experience in five years will be highly personalized."
Much of the new technology has been developed in Silicon Valley, where companies including Accenture, a technology and consulting company in San Jose, Calif.; Matterport, a Mountain View tech startup and 3-D camera developer; and Tobii have been quietly courting retailers with new products.
"Everyone is interested in personalizing shopping and augmented reality and virtual reality," said William Brinkman, graduate director of the computer science department at Miami University of Ohio. "They are trying to see what their value is and what they do that Amazon doesn't."
Already, glimpses of this virtual reality retail bonanza have appeared.
Bloomingdale's recently tested virtual dressing rooms, which let customers "try on" outfits that appear when they are looking at themselves on a large screen.
Accenture has developed an app for Google Glass, the Internet-connected and voice-controlled eyeglasses, that allows customers to explore Toyota showrooms and check out new cars through augmented reality.
Glashion, a fashion app for Google Glass, allows users to purchase fashion items online as soon as they spot someone else wearing it.
"It's all about understanding how people think," Ms. Barclay said. "It's almost like being inside someone's head."