Patent for Multi-User Device Activity Tracking

ChangeBridge: Patent Grants - Diagnosis & Surgery (A61B)

Published March 24th, 2026

Detected March 26th, 2026

Summary

The USPTO has granted Motorola Mobility LLC a patent (US12582871B2) for techniques enabling multi-user activity tracking on a single device. This patent covers methods for detecting user device possession changes and tracking individual physical activity logs.

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What changed

The United States Patent and Trademark Office (USPTO) has issued patent US12582871B2 to Motorola Mobility LLC. This patent details techniques for tracking the physical activity of multiple users on a single client device. The core innovation lies in the ability to detect when possession of the device switches from one user to another and to maintain separate activity logs for each user.

This patent grant is primarily an intellectual property matter and does not impose immediate regulatory obligations on other entities. However, companies developing or manufacturing devices with similar multi-user tracking capabilities, particularly in the consumer electronics or wearable technology sectors, should be aware of this granted patent to avoid potential infringement issues. The patent's effective date is March 24, 2026.

Source document (simplified)

← USPTO Patent Grants

Activity tracking for multiple users on a device

Grant US12582871B2 Kind: B2 Mar 24, 2026

Assignee

Motorola Mobility LLC

Inventors

Amit Kumar Agrawal, Krishnan Raghavan

Abstract

Techniques for activity tracking for multiple users on a device are described. For instance, the described techniques can be implemented to detect that a first user is in possession of a client device and to track physical activity of the first user as part of an activity log of the first user. The techniques can detect, via sensor data, that possession of the client device switches from the first user to a second user, and track physical activity of the second user as part of an activity log of the second user. In implementations the techniques can track physical activity of multiple users via a single device.