BridgeOS

bridgeOS
DeveloperApple Inc.
Written in
OS family
Working stateCurrent
Source modelClosed, with open-source components
Initial releaseOctober 27, 2016 (2016-10-27)
Update methodFOTA (via Mac running macOS)
Platforms
LicenseProprietary software except for open-source components
Support status
Supported

bridgeOS is an embedded operating system created and developed by Apple Inc. for use exclusively with its hardware. bridgeOS runs on the T series Apple silicon processors and operates devices such as the OLED touchscreen strip called the "Touch Bar", TouchID fingerprint sensor, SSD encryption, and cooling fans.

At boot time, the bootloader executes the bridgeOS kernel, then the bridgeOS kernel passes off to the UEFI firmware.

bridgeOS is based on Apple's watchOS.