The Quick Read
Bluetooth trackers use other people's phones to locate your lost keys. Every major brand now ships with anti-stalking alerts, but they do it differently, and the privacy tradeoffs are not the same.
Apple's Find My network runs on more than a billion Apple devices. [4] Google's Find Hub runs on more than a billion Android devices. [3] Samsung's SmartThings Find runs on Samsung Galaxy phones. Tile runs on phones running the Tile app.
Apple and Google jointly published a cross-platform specification called DULT (Detecting Unwanted Location Trackers) in May 2024, so an iPhone can now warn you about an unknown tracker traveling with you regardless of who made it. [1]
The hard question is what each network collects, what it shares, and what happens when someone uses one of these devices to follow you.
How Bluetooth Trackers Actually Work
A tracker like an Apple AirTag or a Tile is a small Bluetooth beacon. It does not have its own cellular connection, so it cannot report its own location. Instead, it broadcasts a Bluetooth identifier that nearby phones detect.
When any phone running the matching network passes nearby, the phone uploads the tracker's location to the network. The owner of the tracker then sees that location in their app.
This is the part most people miss. Your phone is part of someone else's tracking network whether you like it or not. Apple phones relay AirTag locations. Android phones (since the 2024 Find Hub launch) relay Find Hub compatible tracker locations.
Apple's personal safety guide puts it this way: "the Find My network uses end-to-end encryption" and "unique Bluetooth identifiers that change frequently." [2]
What the owner sees
The owner of the tracker can see its last reported location, and for AirTags and Find Hub compatible devices, a map with the tracker's recent route. Tile's app shows the same kind of map for Tile trackers.
Both Apple and Google use end-to-end encryption for the location relay, meaning the relaying phones do not know which tracker they are reporting, and Apple or Google cannot read the location in transit. [2] [3]
The Four Networks Compared
Apple Find My
Find My is Apple's crowdsourced network. Apple's AirTag product page describes the network as "more than a billion iPhone, iPad, and Mac devices." [4]
Find My uses end-to-end encrypted location reports. [2] Apple holds the encryption keys and can be compelled to provide paired account details in response to a subpoena or valid law enforcement request. [5]
Google Find Hub (formerly Find My Device)
Google rebuilt the Android Find My Device network and launched it in April 2024. The network runs on "a new, crowdsourced network of over a billion Android devices." [3]
Google's blog announcement says the network offers "end-to-end encryption of location data as well as aggregated device location reporting, a first-of-its-kind safety feature that provides additional protection against unwanted tracking back to a home or private location." [3]
Find Hub requires Android 9 or later to participate. [3] Pixel 8 and 8 Pro owners can locate devices that are powered off or have a dead battery, thanks to specialized Pixel hardware. [3]
Samsung SmartThings Find
Samsung's SmartThings Find uses Galaxy phones as the relay network for SmartTag and SmartTag2 devices.
SmartThings Find supports an "unknown SmartTag" alert. Samsung's own documentation says you can "prevent people from tracking your location by setting it to receive a notification on your mobile device if an unknown SmartTag is moving with you when you are moving." [6] This is Samsung's equivalent of Apple's and Google's anti-stalking alerts, but it runs inside the SmartThings app, not the OS.
Tile (Life360)
Tile is now owned by Life360. Tile trackers rely on phones running the Tile app, which is a much smaller installed base than Apple's or Google's network. Life360 has not published a public device count for the Tile network.
Tile offers a feature called "Scan and Secure" inside the Tile app. Tile announced Scan and Secure in March 2022, and the feature lets anyone, including people who do not own a Tile, scan for unknown Tile trackers nearby. [7] The full scan "can take up to 10 minutes of uninterrupted time to complete and deliver the most accurate results." [7]
Tile's anti-stalking protection runs only when a user manually opens the app and runs the scan. There is no automatic alert like the ones iOS and Android now ship.
The Cross-Platform Anti-Stalking Spec (DULT)
In May 2024, Apple and Google jointly shipped a new industry specification called Detecting Unwanted Location Trackers (DULT). [1]
The specification lets a phone alert its user about an unknown Bluetooth tracker traveling with them, regardless of which company made the tracker. Apple launched support in iOS 17.5; Google is rolling it out on Android 6.0 and later. [1]
The Apple and Google announcement lists the tracker makers committed to the spec: "Bluetooth tag manufacturers including Chipolo, eufy, Jio, Motorola, and Pebblebee have committed that future tags will be compatible." [1]
The spec is being formalized through the Internet Engineering Task Force (IETF) under the Detecting Unwanted Location Trackers working group. [1]
Before DULT shipped, an Android user had no automatic way to detect an AirTag following them. Now both platforms can.
How Each System Detects a Tracker Following You
On iPhone
Apple says iPhone and iPad ship with unwanted tracking notifications enabled by default since iOS 14.5. [8] The notification shows the alert label "AirTag Found Moving With You," "AirPods Detected," "AirPods Pro Detected," "AirPods Max Detected," or "Unknown Accessory Detected." [8]
Compatible alerts for unknown third party trackers (the DULT spec) require iOS 17.5 or later. [8]
If the alert fires, the iPhone can play a sound on the tracker or use Precision Finding to walk you to it. [8] Holding the iPhone near the tracker pops up a website showing its serial number and the last four digits of the phone number or an obfuscated email address of the person who registered it. [8]
The AirTag itself also chirps. Apple's guide: "Any AirTag separated for a period of time from its owner makes a sound to notify those nearby." [8]
On Android
Android's unknown tracker alerts work with the Find Hub network plus Apple AirTags. [9] Google publishes a list of supported devices, including Apple AirTag, Chipolo CARD, Chipolo ONE, Motorola moto tag, Pebblebee Card, Pebblebee Clip, and Pebblebee Tag. [9]
Android processes the alert entirely on-device: "This information is processed and temporarily stored in an encrypted format, never leaving your device." [9] Google says it does not see your location, the timestamps, or the tracker ID. [9]
Alerts are limited to one per tracker per day, and the alert history is deleted after 48 hours. [9] Users can run a manual scan under Settings, then Safety and Emergency, then Unknown tracker alerts, then Scan now. [9] Google says the manual scan "takes about 10 seconds to complete." [9]
If you cannot find the tracker, you can tap "I cannot find the tracker" to temporarily pause location updates for up to 24 hours. [9]
On Samsung (SmartThings Find)
Samsung ships unknown SmartTag alerts through the SmartThings app. [6] Like Google's system, Samsung's alert fires when an unknown SmartTag is moving with the user.
The alerting is app-based, not OS-level, so it works only when SmartThings is installed and notifications are enabled. There is no automatic cross-platform detection of unknown SmartTags from an iPhone.
On Tile
Tile does not push automatic alerts. Anyone who suspects they are being tracked by a Tile must download the Tile app, open it, and run Scan and Secure. [7]
That scan runs only when initiated. It does not run in the background, and it does not notify the user proactively. For someone who does not know Tile exists, this is a real gap.
What the Owner Can Be Forced to Disclose
Apple has the most clearly documented commitment. The Feb 2022 Apple newsroom post stated that "Apple can provide the paired account details in response to a subpoena or valid request from law enforcement." [5]
Google processes unknown tracker alerts entirely on-device, so Google itself does not hold the alert location data. [9] Google still holds the Find Hub account data, which would be subject to Google's standard law enforcement process.
Samsung holds the SmartThings account data tied to a registered SmartTag. Tile's account data sits inside Life360.
Apple's stance is the most restrictive. The Feb 2022 Apple newsroom post stated that Apple "condemns in the strongest possible terms any malicious use of our products" and described AirTag as "the first-ever proactive system to alert you of unwanted tracking." [5]
What You Can Actually Do About a Hidden Tracker
If your iPhone alerts you
Apple's recommended steps, from the personal safety guide: [8]
- Tap the notification and try "Play Sound" or "Find Nearby" to locate the tracker.
- If you find it, hold your iPhone near it to see the serial number and the masked owner identifier.
- Take a screenshot of the device information for your records.
- Tap "Instructions to Disable" and follow the steps. For an AirTag this means removing the battery. [2]
- If you feel your safety is at risk, contact local law enforcement and provide the AirTag and its serial number. Apple says it will work with law enforcement on valid requests. [8]
If your Android phone alerts you
Google's flow is similar but on-device: [9]
- Tap the notification to see a map and play a sound on the tracker.
- The tracker instructions come straight from the device, not Google.
- Use "Find nearby" to walk toward it.
- If you cannot find it, pause location updates for 24 hours while you investigate.
- For ongoing concerns, contact law enforcement. Google does not hold the alert data, so Google cannot retrieve it for police.
Important caveat
Both Apple and Google warn that turning off Bluetooth, turning off Location Services, or enabling Airplane Mode does not stop the owner from locating the tracker. [2] [9] The only way to stop the owner is to physically disable the tracker (remove its battery, in the case of an AirTag, or follow the app's instructions).
What a Hidden Tracker Can and Cannot Do
A Bluetooth tracker is a location beacon, not a microphone or a camera. It cannot record audio, take photos, or read your messages. Its only capability is reporting its location to its owner's app.
That is plenty. A tracker traveling with you can map your home, your workplace, the homes of your friends and family, your children's school, your doctor's office, and any other place you regularly visit.
Apple's own safety documentation is blunt. The first thing Apple's personal safety guide tells you to do if you find a hidden tracker is to "take a screenshot of the item and owner information for your records" before disabling it, because that screenshot is the evidence you would hand to law enforcement. [8]
The Comparison At a Glance
Apple Find My
- Network: More than 1 billion Apple devices [4]
- Location encryption: End-to-end [2]
- Automatic anti-stalking alert: Yes, since iOS 14.5 [8]
- DULT cross-platform: Yes, iOS 17.5+ [1]
- Owner info to law enforcement: With subpoena [5]
Google Find Hub
- Network: Over 1 billion Android devices [3]
- Location encryption: End-to-end [3]
- Automatic anti-stalking alert: Yes, Android 6+ [9]
- DULT cross-platform: Yes [1]
- Owner info to law enforcement: Through Google's standard legal process
Samsung SmartThings Find
- Network: Samsung Galaxy phones (size not publicly disclosed)
- Automatic anti-stalking alert: Yes, via SmartThings app [6]
Tile (Life360)
- Network: Phones running the Tile app, exact count not published
- Automatic anti-stalking alert: Manual Scan and Secure only [7]
- DULT cross-platform: Not on the Apple/Google DULT manufacturer list [1]
Which Tracker Should You Actually Buy
If you are an iPhone user, AirTag is the obvious pick. Find My runs on more than a billion Apple devices, and you get automatic anti-stalking alerts if anyone slips an unknown tracker into your bag.
If you are an Android user, your best option is a Find Hub compatible tag from Chipolo, Pebblebee, or Motorola. Find Hub runs on more than a billion Android devices, and the anti-stalking alert runs on-device so Google never sees the location of the unknown tracker. [9]
If you are a Samsung user with a Galaxy phone, SmartTag2 is built to work with SmartThings Find and offers unknown SmartTag alerts inside the SmartThings app. [6]
If you live in a mixed household with both iPhones and Android phones, the DULT spec means an AirTag will now alert either platform, so the network size advantage extends beyond Apple-only households. [1]
Tile is the weakest option on anti-stalking. The network is smaller, the anti-stalking protection requires a manual scan, and Tile is not on the Apple/Google DULT manufacturer list. [1]
How to Tell If You Are Being Tracked Right Now
iPhone
Apple's instructions: [8]
- Open Settings, then Privacy and Security, then Location Services. Confirm Location Services is on.
- Open Settings, then Privacy and Security, then Tracking. Allow Tracking Notifications.
- Open Settings, then Apps, then Find My, then enable "Notify When Found."
- If you received an alert, tap it and tap Play Sound or Find Nearby.
- You can also use the "Find My" app, then "Items," then "Identify Found Item" to manually scan.
Android
Google's instructions: [9]
- Open Settings, then Safety and Emergency, then Unknown tracker alerts.
- Tap "Scan now." The manual scan takes about 10 seconds.
- Make sure Bluetooth and Location are both on. Alerts do not work if Bluetooth is off or Airplane Mode is on.
- Some older Android phones (under 6.0) require the separate "Tracker Detect" app from Google Play, published by Apple, to scan for AirTags. [8]
Samsung
Open SmartThings, then "Life," then "Find," then check for any unknown SmartTag alerts. Use the "Search for unknown tags near you" option in the SmartThings settings to manually scan. [6]
Tile
Download the Tile app (free, no Tile device needed), open it, tap "Scan and Secure," and let the scan complete. [7] The scan runs for about ten minutes. [7]
The Bottom Line
Bluetooth trackers are useful, and the major brands now ship with real anti-stalking protections. Apple's AirTag and Google's Find Hub compatible trackers have the largest networks and the strongest anti-stalking defaults. Samsung's SmartTag2 works well inside the Galaxy ecosystem. Tile is the laggard on automatic anti-stalking alerts.
The May 2024 DULT specification is the single biggest privacy improvement. For the first time, an iPhone will warn you about an unknown Chipolo, an unknown Pebblebee, or an unknown Motorola tag, and an Android phone will warn you about an unknown AirTag. [1]
If you only remember three things from this comparison, make them these.
- If you get an unexpected alert, take a screenshot of the owner identifier before disabling the tracker. That screenshot is your evidence. [8]
- Turning off Bluetooth or Airplane Mode does not stop the owner from seeing your location. The only fix is to physically disable the tracker. [2] [9]
- For the best combination of network size and privacy protection, choose the network that matches your phone. AirTag for iPhone. Find Hub compatible tags for Android. SmartTag2 for Samsung.
References
- Apple Newsroom: Apple and Google deliver support for unwanted tracking alerts in iOS and Android (May 2024)
- Apple Support: What to do if you get an AirTag, AirPods, or Find My alert
- Google Blog: Find My Device announcement (April 2024)
- Apple: AirTag product page (network size and privacy)
- Apple Newsroom: An update on AirTag and unwanted tracking (February 2022)
- Samsung Support: How to disable SmartTag 2 location tracking (unknown SmartTag alerts)
- TechCrunch: Tile launches its anti-stalking safety feature (March 2022)
- Apple Personal Safety Guide: Detect unwanted trackers
- Google Android Help: Find unknown trackers