DSE 2015: Audience Uses NFC Enabled Coasters to Enable Mobile Interaction with Digital Signage March 12, 2015 | Home / March 12, 2015 rave-video / DSE 2015: Audience Uses NFC Enabled Coasters to Enable Mobile Interaction with Digital Signage DSE 2015: Audience Uses NFC Enabled Coasters to Enable Mobile Interaction with Digital Signage