The vice president for digital product for Clear Channel Outdoor has told NFC Times the company’s recent announcement of plans to expand its NFC-enabled outdoor advertising network to several more countries is based on “engagement rates” by consumers that justify the larger deployment.

Clear Channel late last month announced it has expanded its NFC- and QR-code-enabled outdoor advertising network to five new countries, with plans to go global with the interactive mobile advertising panels in 16 more countries by June 2014.

The company declined to share specific figures on the number of times consumers have tapped tags in its UK launch or its tag campaigns in the U.S., but Clear Channel’s Josh Kruter told NFC Times that the company “wouldn’t be making this investment if we hadn't seen enough engagement to say 'this is an incredible capability that has been built into devices.'"