Kiosks aren’t just for selling tickets or providing customers with another way to order a meal. They can personalize the guest experience too.

“Our take on it is that we’re all different,” Bite CPO Steven Truong has said. “Our recognition and learning algorithm allows us to give each guest a different experience — and cater to their personal needs.”

Bite is far from alone in its quest to capitalize on the demand for kiosks. Overall, the kiosk market is booming and is projected to reach $1 billion by 2021.

And, between 2013 and 2016, the size of the U.S. interactive kiosk industry market grew at an average of 10.36 percent from $533.37 million to $716.97 million, according to the PYMNTS Kiosk & Retail Report. Here are five segments for the kiosk market — and how they help businesses function more efficiently.

— Food self-service kiosks made up 16 percent of the percentage participation in relation to the total market. For instance, McDonald’s is on its way to making “wait time zero” a reality, with kiosks playing a big role. Early statistics have shown a 20 percent higher average ticket being placed at the self-service kiosk versus the counter. And Panera made news when it decided to start using touchscreen order kiosks to solve crippling bottlenecks in its stores. The bakery chain is rolling out the technology along with simplified kitchen displays. Subway, too, is hoping that new technology, including touchscreen kiosks, can save it from a three-year sales slump before it has to close more stores.