"I believe in America"
｢ New gates at the entrance automatically swing open when customers walk in, but they’re set to trigger an alarm if someone attempts to back out. And if you walk into Safeway and change your mind about grocery shopping, you might find yourself trapped: Another gate that only opens if you scan your receipt blocks the store’s sole exit ｣
https://www.sfgate.com/food/article/sf-grocery-store-installed-security-measures-21138800.php