Explore advanced techniques for discovering debug interfaces using the JTAGulator in this 43-minute Black Hat conference talk. Delve into the intricacies of JTAG, including its architecture, data registers, state machine, and instructions. Learn about software tools for ID code scanning, device identification, and bypass scanning. Witness practical demonstrations using various devices like Linksys WRT54G and Samsung products. Gain insights into UART specifications, asynchronous data transmission, and UART scanning techniques. Discover the limitations of current methods and potential future developments in the field. Acquire valuable resources for further information and engage in a Q&A session to deepen your understanding of debug interface discovery.