Our bikes are our prized possessions, and having one stolen is one of our biggest fears, so while we can't totally prevent bike theft, we can sure deter it with the Knog Scout bike alarm & finder. This discrete alarm sits underneath our bottle cage with a set of tamperproof screws, and once armed, it emits an insanely loud 85db alarm if someone tries to take our bike. And in the chance that someone is undeterred, we can use Apple's 'Find My' app to locate our bike.