Fanta is targeting teens with “Fanta Stealth Sound System,” an app that allows them to communicate with one another while cutting adults out of the conversation. People lose the ability to hear ultra-high pitched sounds as they grow older, so the soft drink company created the app with a selection of sounds only audible to teens. Fanta promoted “Stealth Sound System” by distributing cans displaying instructions to download. In the past month, there have been more than 320,000 downloads.