TMD Locks is a Dutch company specializing in smart bike security, backed by more than 20 years of security expertise through its parent company, TMD Security. Drawing on experience protecting high-value financial infrastructure, the brand applies its security knowledge to cycling with connected, thoughtfully designed locks.

Its current product is the TMD Chain Lock, a keyless smart chain lock available in several lengths and colors. Riders can unlock it by pressing a button when their phone is nearby. A built-in 100 dB alarm detects tampering, while a soft outer sleeve helps prevent scratches and a flexible, lightweight design makes the lock easier to handle and carry.

The TMD Locks app supports access sharing with friends and family, provides activity insights about lock use, and shows the lock’s last known location. TMD Ring Lock and TMD U-Lock models are listed as coming soon. The company also offers customer support, warranty and returns information, dealer resources, and articles about bike security and smart locks.