That’s not a typo in the title, because this isn’t an anti-theft device. It works in addition to a regular bike lock, the idea is to make life miserable for thieves should they steal this bike.
When this thingy is activated it clamps down onto the front wheel. It prevents the front wheel from rolling easily, and keeps the rider from being able to turn the handlebars to steer.
It does have a lock on the bike frame to engage the system. There are two clamps attached to each other on a single pivot point. When locked-up, both clamps attach to the bike. When unlocked, the front clamp sports a headlight, the back clamp can hold a water bottle.
The lock on the frame is a deadbolt lock. The back clamp sports a magnet to keep it attached to the lower frame in water bottle mode (it’s also heavier than the front clamp, and further away from the pivot point, so it should stay down safely).
The lock on the frame could extend to the section underneath the seat, so it could support a flashing red light. Just thought of that now.