Revel Systems, a company that sells an iPad point of sale register to merchants, has already scored a touchdown at this year’s Super Bowl. Registers from the Silicon Valley payments upstart and Square-rival will power all retail transactions at Levi’s Stadium during the game on Sunday.

Revel will provide 150 terminals installed at the 29 stands or stores that sell things like branded hats, jerseys, and collectables, throughout the stadium. These registers are normally powered by Oracle’s competing Micros point of sale terminals.

The Super Bowl committee and Levi’s Stadium chose to switch the terminals to Revel for retail sales—but not food sales—because the newer system lets them see transaction volume in realtime, explained Revel CEO Lisa Falzone. Revel Systems can also aggregate sales from other types of vendors, including food, so organizers can see total sales from both food and retail at any given time.

Falzone also argued that the Revel Systems terminals are easy to use and, therefore, training temporary employees to use them doesn’t take much time.

Revel, which has raised over $100 million in venture funding from Intuit and others, has developed a point of sale system that lets merchants accept credit cards through card readers that connects to iPads. The system differs from Square in that it varies based on the type of merchant.

For example, Revel sells hardware and software that lets movie theaters print tickets for customers. The company also offers a product for grocery stores that integrates bar code scanning and weight of produce and meats.

Revel also has a relationship with Apple to sell businesses more iPads. Meanwhile, Square has also worked with Apple to develop its Apple Pay-enabled point of sale hardware.

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For Revel, getting game time during one of the biggest sports events is a testament to the point of sale’s capability to handle a massive amount of transactions, explained Falzone.

This isn’t the first sports event Revel has participated in. The company’s registers also powered retail and food sales at the Indy 500, where it processed $2.8 million in sales in two days. During the Super Bowl, Revel again expects to process millions in sales.