Which point-of-sale innovation has most significantly changed how performing arts venues manage intermission concession sales in the last decade?

The performing arts industry is constantly evolving, not just artistically but also in how venues engage with audiences through retail technology. Modern theaters and performance spaces are implementing sophisticated point-of-sale systems that do more than just sell tickets. Test your knowledge about how technology is transforming the audience experience at performing arts venues!

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Mobile pre-ordering systems that allow patrons to place and pay for intermission refreshments before the show begins
Cryptocurrency payment terminals that accept Bitcoin and other digital currencies
Facial recognition systems that automatically charge the patron's account based on what they pick up
Robotic bartenders that mix and serve drinks without human intervention