Explore a conference talk examining the security and usability of segment-based visual cryptographic authentication protocols. Presented at CCS 2016, the 23rd ACM Conference on Computer and Communications Security, by researchers from Purdue University. Delve into the analysis of these protocols, their potential vulnerabilities, and user experience considerations. Gain insights into the intersection of cryptography, visual authentication methods, and human-computer interaction in this 31-minute presentation from a leading cybersecurity conference.