The next time you check in to a hotel, you might not have to ask the clerk what the WiFi password is.
Researchers at a Swiss university have developed a method to transmit data, like passwords, through audio.
So imagine this scenario: you walk in to your hotel room, a song plays, the microphone on your smartphone hears it and immediately connects you to the internet.
The possibilities are jarringly endless.
A retailer could play different music throughout each department of a store to provide access to special coupons and offers related to your location.
Additionally, a museum could send you more information on an exhibit by playing a song at the entrance.