Camera Placement
Use a fixed view that shows the lock and hands. Check lighting, scale, and occlusion on site.
Bicycle Theft Detection through Bike Lock Review
Bicycle Theft Detection brings someone cutting or forcing a bicycle lock to an operator for review.
The Visible Condition
Describe What the Camera Can Show
The observable condition is someone cutting or forcing a bicycle lock at a public bicycle rack. A frame can bring the scene to an operator. It cannot establish intent, cause, or the right response.
A useful prompt focuses on a visible tool or force applied to a bicycle lock. The camera must resolve that small action at the rack. Staff then check context; a bicycle owner may be cutting a damaged lock or a mechanic may be working with permission.
An authorized operator can enter a plain-language prompt such as “Alert when someone cuts or forces a bicycle lock at this rack.” StreamVLM™ evaluates sampled live frames from selected cameras against it. A match enters the IREX event flow.
Each detector has its own confidence threshold and alert cooldown. The team tests wording and settings on its cameras.
StreamVLM™ evaluates sampled frames, so a brief action can fall between samples. Test the actual camera view and response timing before relying on this prompt for an urgent event.
Explore StreamVLM™Operational Fit
Plan the View and Review
Operator Decision
The reviewer should review the action before requesting a security check. The prompt does not decide this automatically.
Likely False Matches
Check for an owner unlocking a bicycle or authorized repair. Tune camera selection and alert settings during a pilot.
Illustrative Camera Frames
Describe the Lock Action, Not the Person
Synthetic frames illustrate possible matches. They are not real incidents, deployments, or accuracy evidence.
Lock action
Tool at the Bike Lock
The lock action is visible; ownership and permission still require a human check.
From Prompt to Action
How an Alert Becomes a Decision
- 01
Describe and Select
Use observable wording such as “Alert when someone cuts or forces a bicycle lock at this rack.” on cameras that show the complete relevant scene.
- 02
Review the Event
Open the match and surrounding footage. Compare with ordinary scenes such as an owner unlocking a bicycle or authorized repair.
- 03
Apply the Site Procedure
Security staff verify the clip and context. Visible action does not establish ownership or criminal intent.
Pilot Questions
Validate on Your Cameras
- Visibility
- Can the view consistently show someone cutting or forcing a bicycle lock? Test representative lighting, weather, and occlusion.
- False Alerts
- Sample ordinary scenes, especially an owner unlocking a bicycle or authorized repair, then tune prompt, threshold, and cooldown.
- Human Review
- Agree who checks a match and how to review the action before requesting a security check. No universal accuracy figure is published for this prompt.
FAQ
What does bicycle theft detection report?
It reports a match to a described visible condition: someone cutting or forcing a bicycle lock. An operator reviews footage before deciding what happened.
Can a match establish intent or liability?
No. A sampled frame cannot establish intent, authorization, responsibility, or cause. Staff check context and follow local procedure.
Can the alert establish who owns the bicycle?
No. The prompt concerns a visible action. Ownership and authorization require separate human checks.
How should we evaluate it?
Test representative cameras and ordinary scenes, including an owner unlocking a bicycle or authorized repair. Agree on useful alerts and missed events. IREX does not publish a universal accuracy figure for this prompt.
Test Bicycle Theft Detection on Your Cameras
Choose representative views of a public bicycle rack. We can scope the prompt, alert settings, and review procedure for a pilot.