QuadLockCase refers to the brand Quad Lock, an Australian company that creates protective phone cases with an integrated patented locking mechanism. This case is the core of a larger system that allows users to securely mount their phone on various accessories for activities like cycling, motorcycling, or driving. The cases are known for being impact-resistant and slim, while the mounts offer a secure, one-handed, quarter-turn locking system, with options including vibration dampeners to protect a phone's camera.