Aliro

An open standard for secure mobile access control using smartphones and wearables

Aliro is a standardized communication protocol developed by the Connectivity Standards Alliance (CSA) that enables interoperability between mobile devices, wearables, and access control readers from different manufacturers. The standard defines how smartphones and wearables can securely replace physical keys for unlocking doors and entry points in both residential and commercial applications.

The protocol supports multiple wireless technologies, including Bluetooth Low Energy (BLE), Ultra-Wideband (UWB), and NFC, allowing developers to choose the appropriate technology for their specific use case.

Nordic Semiconductor is actively involved in the development of the Aliro standard and provides complete hardware and software solutions for building Aliro-compliant access control devices.

Aliro supports multiple wireless technologies for different use cases. NFC is mandatory for all Aliro-compatible devices, providing a tap-to-unlock experience with minimal power consumption. Bluetooth Low Energy combined with Ultra-Wideband (UWB) is an optional extension that enables hands-free unlocking with precise spatial awareness and secure ranging for seamless access. The Aliro protocol remains consistent across both technology options.