Houston Astros’ stadium will be the first in MLB to use Amazon’s ‘Just Walk Out’ tech

Amazon has brought its checkout-free "Just Walk Out" technology to airports, grocery stores and other shops, but now it's coming to a particularly useful place for sports fans: the ballpark. The Houston Astros have teamed up with Amazon to install Just Walk Out systems at two concession stores in Minute Maid Park. Visit 19th Hole or Market and you can buy snacks or souvenirs between innings by inserting your credit card at the entry gate, grabbing things off the shelf, and leaving when you're done.