Joe Grand created DEF CON 27’s official attendee badge with NXP’s Near-Field Magnetic Induction (NFMI) and the KL27 ARM Cortex-M0+ MCU. Jae Park, Marketing and Communications Manager at NXP, met Joe at DEF CON 27 to get insights into Joe’s career and to learn what drove him back into creating the badge again after a self-imposed “badge retirement.”