Creators of This Police Location Tracking Tool Aren't Vetting Buyers. Here's How To Protect Yourself

404 Media, along with Haaretz, Notus, and Krebs On Security recently reported on a company that captures smartphone location data from a variety of sources and collates that data into an easy-to-use tool to track devices’ (and, by proxy, individuals’) locations. The dangers that this tool presents are especially grave for those traveling to or from out-of-state reproductive health clinics, places of worship, and the border.

The tool, called Locate X, is run by a company called Babel Street. Locate X is designed for law enforcement, but an investigator working with Atlas Privacy, a data removal service, was able to gain access to Locate X by simply asserting that they planned to work with law enforcement in the future.

With an incoming administration adversarial to those most at risk from location tracking using tools like Locate X, the time is ripe to bolster our digital defenses. Now more than ever, attorneys general in states hostile to reproductive choice will be emboldened to use every tool at their disposal to incriminate those exerting their bodily autonomy. Locate X is a powerful tool they can use to do this. So here are some timely tips to help protect your location privacy.

First, a short disclaimer: these tips provide some level of protection to mobile device-based tracking. This is not an exhaustive list of techniques, devices, or technologies that can help restore one’s location privacy. Your security plan should reflect how specifically targeted you are for surveillance. Additional steps, such as researching and mitigating the on-board devices included with your car, or sweeping for physical GPS trackers, may be prudent steps which are outside the scope of this post. Likewise, more advanced techniques such as flashing your device with a custom-built privacy- or security-focused operating system may provide additional protections which are not covered here. The intent is to give some basic tips for protecting yourself from mobile device location tracking services.

Disable Mobile Advertising Identifiers

Services like Locate X are built atop an online advertising ecosystem that incentivizes collecting troves of information from your device and delivering it to platforms to micro-target you with ads based on your online behavior. One linchpin in the way distinct information (in this case, location) delivered to an app or website at a certain point in time is connected to information delivered to a different app or website at the next point in time is through unique identifiers such as the mobile advertising identifiers (MAIDs). Essentially, MAIDs allow advertising platforms and the data brokers they sell to to “connect the dots” between an otherwise disconnected scatterplot of points on a map, resulting in a cohesive picture of the movement of a device through space and time.

As a result of significant pushback by privacy advocates, both Android and iOS provided ways to disable advertising identifiers from being delivered to third-parties. As we described in a recent post, you can do this on Android following these steps:

With the release of Andro