A computer-implemented technique includes establishing, at a first computing device including one or more processors, a near field communication (NFC) link with a second computing device. The technique includes identifying, at the first computing device, an application having a foreground designation in an operating system of the first computing device, the identifying being performed upon establishment of the NFC link with the second computing device. The technique includes determining, at the first computing device, an identifier for the application, wherein the identifier uniquely identifies the application at a source external to the first computing device. The technique also includes transmitting, from the first computing device, the identifier for the application via the NFC link to the second computing device.