What is the Auto Lock Feature?
Overview of AlterLock and the Role of Auto Lock
AlterLock is a smart security device designed to prevent theft of bicycles and motorcycles. It features GPS tracking and vibration detection, earning high praise for enhancing user peace of mind. Among its features, the “Auto Lock” function stands out for balancing convenience and security in daily use.
How Auto Lock Works with Your Smartphone
The Auto Lock feature uses Bluetooth connectivity between AlterLock and your smartphone. When you move away from your vehicle, it automatically locks; when you return, it unlocks. This eliminates the need for manual locking and reduces the risk of theft.
Technical Mechanism of Auto Lock
Bluetooth Signal Strength-Based Detection
Auto Lock determines whether you’ve moved away from your bicycle or motorcycle based on the strength of the Bluetooth signal between the device and your smartphone. When the signal drops below a certain threshold, the connection is considered lost, and the lock is activated.
Sensitivity Settings (High to Low) and Their Behavior
The AlterLock app allows you to set Auto Lock sensitivity to one of three levels: High, Medium, or Low.
Sensitivity Level | Approximate Range | Characteristics |
---|---|---|
High(-60dB) | 3~5m | Locks quickly when you walk away. Ideal for theft prevention. |
Middle(-75dB) | 5~7m | Balanced setting. Suitable for everyday use. |
Low(-100dB) | 5~10m | Locks at a greater distance. Useful for avoiding false triggers. |
Note: Actual range may vary depending on the phone and the environment.

Lock and Unlock Conditions
- Lock Condition: When the Bluetooth connection is lost for a certain period, the device automatically locks.
- Unlock Condition: When the connection is restored and your smartphone is within range, the device automatically unlocks.
This system ensures security without requiring conscious effort from the user.
Note: The App must be active in the background for Auto Lock feature to work properly
Real-World Use Cases and Benefits

Convenience for Commuting and Daily Use
Whether you’re commuting or attending school, Auto Lock is highly convenient. Simply walking away with your smartphone locks the vehicle, and returning unlocks it—no need to handle keys.
Peace of Mind During Long Rides
When traveling long distances by bicycle or motorcycle, you often leave your vehicle unattended during breaks. Auto Lock helps prevent forgetting to lock it, reducing theft risk. This is especially reassuring in crowded places like tourist spots or service areas.
Theft Risk Reduction While Parked
In urban areas or busy locations, even short stops can pose a theft risk. Auto Lock activates the moment you walk away, minimizing the chance of opportunistic theft.
How to Configure and Customize Auto Lock
Adjusting Sensitivity in the App
You can easily adjust Auto Lock sensitivity using the AlterLock app:
- Open the app and go to the device settings screen.
- Select the “Auto Lock Sensitivity” option.
- Choose from “High,” “Medium,” or “Low.”
- Save your settings—they take effect immediately.

Recommended Settings by Environment
Usage Scenario | Recommended Sensitivity | Reason |
---|---|---|
Short-term parking in urban areas | High | Locks immediately to maximize theft prevention. |
Daily commuting or school use | Middle | Balances security and false trigger prevention. |
Touring rides (smartphone in a bag) | Low | Maintains connection and avoids false locking. |
Conclusion
Overall Evaluation of Auto Lock
AlterLock’s Auto Lock feature offers a smart, Bluetooth-based theft prevention solution with excellent convenience and safety. It automatically locks and unlocks based on your movements, eliminating the need to remember manual locking and reducing daily stress.
Key Points When Considering Installation
- Ensure the sensitivity settings suit your environment.
- Consider the stability of your smartphone’s Bluetooth connection.
- Combine with other security features (vibration detection, GPS tracking) for enhanced protection.
By installing AlterLock, your bicycle or motorcycle journeys can become safer and more comfortable.