Unlike many other projects porting conventional Linux distributions to Android phones, PostmarketOS does not use the Android build system or userspace. Each phone has only one unique package, and flashable installation images are generated using the pmbootstrap tool.[1] The project intends to support the mainline Linux kernel on all phones in the future, instead of the often outdated Android-specific fork, to reduce the potential for security exploits.[2] A few devices can boot into the mainline kernel already.[11][12]