Adweek's annual #Brandweek summit will explore the ideas behind breakthrough successes, discuss solutions to pressing challenges and explore new opportunities in the Metaverse. Join leaders from Alo Yoga, Hyundai Motor America, Frito-Lay and more, Sept. 12–16 in Miami. Sign up early to save.
For all the talk of mobile-marketing tech, there remains a pretty wide gap between the potential and the practicality of QR codes. That's why it's nice to see this case study from Korea, where a retailer increased lunchtime sales by 25 percent with a shadow-based QR code that's only scannable in the middle of the day.

WORK SMARTER - LEARN, GROW AND BE INSPIRED.
Subscribe today!
To Read the Full Story Become an Adweek+ Subscriber
Already a member? Sign in