Explore the security vulnerabilities and challenges associated with Samsung Pay's tokenized number system in this 25-minute conference talk from Derbycon 2016. Delve into topics such as system updates, database encryption, and reverse group functions. Learn about the speaker's experiences in Mexico and with Raspberry Pi, and gain insights into the broader implications for mobile payment security. Discover how these findings were presented at Black Hat, offering a comprehensive look at the potential flaws and issues in Samsung's payment technology.