Taylor Swift's QR code. Photo: Justin Kaufmann/Axios
Dozens of Chicagoans lined up yesterday to watch workers paint a QR code on the side of a building in River North.
Why it matters: It isn't just any old QR code.It could contain Easter eggs about Taylor Swift's highly anticipated album "The Tortured Poets Department," which is set to drop Thursday at 11pm Central time.
How it works: The code takes you to Taylor Swift's YouTube channel, where a short video shows a "321 Error."
Swift has long used riddles and clues to create a buzz and get fans excited for her album releases.
