DOJ Orders Apple and Google to Reveal Identities of Over 100,000 EZ Lynk Users
*The Department of Justice has demanded that Apple, Google, and Amazon turn over names, addresses, and purchase records for more than 100,000 users of the EZ Lynk vehicle-tuning application.*
The request targets an app that lets owners modify engine parameters on cars and trucks. Federal prosecutors link the software to potential violations of emissions rules. The move marks one of the broadest data demands yet in an ongoing enforcement push against aftermarket vehicle modifications.
Scope of the request
Court filings described in the reporting show the government seeks subscriber details tied to EZ Lynk accounts. The list includes full identities, physical addresses, and complete purchase histories. One source puts the number of affected users above 100,000. A second account narrows the companies named to Apple and Google, while the other includes Amazon as well.
EZ Lynk markets the app as a tool for diagnostics and performance adjustments. Regulators view some of those adjustments as illegal tampering with emissions controls. The data request is part of a larger effort to identify individual vehicle owners rather than pursue the app developer alone.
Technical and legal context
The app connects to a vehicle’s onboard computer through an OBD-II interface. Users can upload custom calibration files that alter fuel maps, timing, and exhaust aftertreatment settings. Federal law prohibits the sale or use of devices that bypass or defeat emissions equipment on vehicles driven on public roads.
Previous enforcement actions focused on manufacturers of defeat devices and tuning shops. This subpoena shifts attention to end users at scale. If granted, the order would give investigators direct contact information for a large slice of the app’s customer base.
Privacy questions
Apple and Google have not commented publicly on the demand. Both companies maintain policies that limit voluntary disclosure of user data without a court order. The current request appears to carry judicial backing, though the exact legal standard applied remains unclear from available reports.
No statements from the app developer or from Amazon appear in the coverage. The absence leaves open whether the companies will challenge the breadth of the request or comply in full.
Practical effects
Owners who bought the app through the App Store or Google Play now face the prospect of direct contact from federal investigators. For many, the purchase was a routine transaction for diagnostic access. The sudden exposure of those records converts a consumer app download into a potential enforcement lead.
The episode also tests how far platform operators will shield transaction data when the underlying conduct involves regulated hardware rather than pure software. Past cases have produced narrower disclosures; this one targets an entire user cohort.
The data demand shows regulators treating app-store records as an efficient way to reach thousands of vehicle owners without inspecting cars one by one. That shortcut will likely prompt fresh debates over the scope of platform cooperation with federal investigations.
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Sources:
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