Explore the vulnerabilities of electronic locks commonly used in shared environments like gyms and offices in this 36-minute conference talk from Nullcon Berlin 2024. Delve into practical physical and side-channel attacks on these "smart" locker systems, challenging manufacturers' claims of security and ease of use. Learn why reusing the same secret PIN across multiple locations or devices can be dangerous, and gain insights into the real-world risks associated with trusting personal belongings to electronic lockers. Discover the intersection of physical security, PIN security, and the potential weaknesses in electronic lock systems used in various settings including offices, factories, labs, and gyms.