To access the Thrones, Heinzelman said, most users scan a QR code outside the restroom that generates a text message to open a specific restroom. — Freepik
QR codes are an omnipresent aspect of smartphone-era life, controlling access of everything from airline tickets to restaurant menus.
But in Long Beach, there are new, and perhaps unexpected, places that can be opened via a smartphone scan: public restrooms.
