Security Researchers Develop Framework for Tracking Bluetooth Devices Using Find My
Ahead of the debut of AirTags and support for locating third-party Bluetooth items through Find My in iOS 14.5, a team of security researchers from the Secure Mobile Networking Lab at the Technical University of Darmstadt in Germany has reverse engineered the Find My protocol and developed an app that's designed to let anyone create an "AirTag" based on a Bluetooth-capable device.

Called OpenHaystack, the app and the source code are available on GitHub for those who are interested in taking a look. The app allows users to create their own Bluetooth tags based on the Find My network by installing an "AirTag" firmware image on a Bluetooth dongle.
The app displays the most recent location of a created Bluetooth tag reported by any iPhone using Apple's Find My network that was implemented in iOS 13, plus it shows the location of the tag on a map.
According to the security researchers, the created tags send out Bluetooth beacons, which are picked up by nearby iPhones that interpret the sending device as lost. The current geolocation is end-to-end encrypted and then uploaded to Apple, with the OpenHaystack app then downloading the encrypted report from Apple and decrypting it locally on the Mac.
In the process of developing this tool, the Secure Mobile Networking Lab researchers also identified a macOS Catalina Find My vulnerability that was reported to Apple and addressed in a 10.15.7 update released back in November. The vulnerability allowed a malicious app to access iCloud decryption keys to download and decrypt location reports submitted by the Find My network.
Apple's iOS 14.5 update includes support for tracking third-party Bluetooth devices in the Find My app using a new "Items" tab, which takes advantage of the same Find My protocol used for the Mac app.
At the current time, in-app tracking is limited to Beats headphones and upcoming Belkin wireless earbuds, but in the future, many third-party Bluetooth devices may include Find My integration, making it easier to keep track of them. This system will also be used by Apple's own rumored AirTags, which have yet to be released.
Popular Stories
Apple's iPhone 17 Pro and iPhone 17 Pro Max models will feature a number of significant display, thermal, and battery improvements, according to new late-stage rumors.
According to the Weibo leaker known as "Instant Digital," the iPhone 17 Pro models will feature displays with higher brightness, making it more suitable for use in direct sunlight for prolonged periods. The iPhone 16 Pro and...
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface.
The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas.
Image Credit: @MajinBuOfficial
The images show three alleged changes compared to Apple's iP...
Just one week before Apple is expected to unveil the iPhone 17 series, an analyst has shared new price estimates for the devices.
Here are J.P. Morgan analyst Samik Chatterjee's price estimates for the iPhone 17 series in the United States, according to 9to5Mac:
Model
Starting Price
Model
Starting Price
Change
iPhone 16
$799
iPhone 17
...
Apple will launch its new iPhone 17 series this month, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive.
If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming to...
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall.
At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
We're only days away from Apple's "Awe dropping" fall event scheduled to take place on Tuesday, September 9 – and along with the new iPhone 17 series, we're going to get a new version of the Apple Watch Ultra for the first time since 2023.
By the time the Ultra 3 is unveiled, it will have been two years since the previous model arrived. The intervening period has left plenty of room for...