Overview

Devices and operating systems determine which signals are accessible, and what integrity assurances are available.

High-level notes:

• Android: Broadest access to raw signals (GNSS, Wi-Fi, Bluetooth, IMU). Supports Play Integrity API.
• iOS: More restricted APIs, but includes App Attest and Secure Enclave for integrity.
• IoT / Linux boards: Flexible access, but security posture depends heavily on hardware and software configuration.