Alterlock anti-theft GPS tracking device review

The reality is that once a bike is stolen, the likelihood of recovering it is extremely low. Alterlock’s GPS tracker looks to change that by offering a huge 1.5 months of GPS tracking amongst other anti-theft features

(Image: © Graham Cottingham)

Cyclingnews Verdict

Passive protection against bike theft with smart accelerometer battery-saving abilities. While it probably won't stop a bike thief, at least you should have a better chance getting your bike back


  • +

    Accelerometer activated tracking saves battery

  • +

    GPS module, Sigfox communication and WiFi has a huge tracking range

  • +

    Lightweight and unobtrusive


  • -

    The initial cost is expensive and the subscription service adds further monthly costs

  • -

    Can easily be removed unless additional special security bolts are purchased

  • -

    USB-C charging cable not included

  • -

    Another thing to remember to charge

You can trust Cyclingnews Our experts spend countless hours testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

Bike theft is unfortunately a very real reality, whether it’s from outside the café, locked in the street or stored in your garage. In many circumstances, the best bike locks are going to make sure your bike is still there when you come back. That said if a thief wants your bike badly enough, not even the largest D-lock is going to stop them.

Alterlock is an alternative approach to bike security, offering an alarm and long-range GPS tracking and communication functionality that should allow you to track down and recover your bike if the unthinkable happens. 

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Graham has been part of the Cyclingnews team since January 2020. He has mountain biking at his core and can mostly be found bikepacking around Scotland or exploring the steep trails around the Tweed Valley. Not afraid of a challenge, Graham has gained a reputation for riding fixed gear bikes both too far and often in inappropriate places.