bridgeOS

bridgeOS
A MacBook Pro touchbar running bridgeOS
DeveloperApple
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)
Supported platforms
LicenseProprietary software except for open-source components
Support status
Supported

bridgeOS is an embedded operating system created and developed by Apple 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", Touch ID 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.