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GooglePatent applicationSecurity & privacyInterest 6/10

Google patents anonymous proof of device health without tracking IDs

Patent drawing
Patent drawing from the official filing.

Google has filed a patent for a system that verifies a device is genuine without using a permanent ID that could track the user. The method uses a cryptographic technique called blind signatures to create temporary proof tokens that confirm the device's integrity. These tokens allow servers to trust the connection while keeping the specific device anonymous.

Why it mattersThis approach could improve online privacy by allowing apps to verify security without linking actions to a specific user's device history.

In the filing’s own words

Methods, systems, and computer media provide attestation tokens that protect the integrity of communications transmitted from client devices, while at the same time avoiding the use of stable device identifiers that could be used to track client devices or their users. In one approach, client devices can receive batches of N device integrity elements from a device integrity computing system, each corresponding to a different public key. The N device elements can be signed by a device integrity computing system. The signing by the device integrity computing system can be signing with a blind signature scheme. Client devices can include throttlers imposing limits on the quantity of attestation tokens created by the client device.

What exactly they claim (claim 1)

1. A method, comprising: receiving, by a computing system of a digital component provider and from a client device, a request comprising a payload, a digital signature, and a device integrity token, wherein the device integrity token comprises an unblinded blind signature of public key data corresponding to a public key of the client device; validating, by the computing system, the request by verifying the digital signature using the public key of the client device; validating, by the computing system, the device integrity token based on a verification of the unblinded blind signature; and in response to determining that the request and the device integrity token are valid, responding, by the computing system, to the request.

Facts

Company
Google (Google LLC)
Official title
ANONYMOUS EVENT ATTESTATION
Publication number
US20260303367A1
Application number
19705066
Filed
Jun 11, 2026
Published
Oct 1, 2026
Inventors
2
Claims
20

Classified under

H04L 9/3257 Electricity & electronicsH04L 9/0825 Electricity & electronicsH04L 9/3249 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.