This is a disk protection user-space daemon. It monitors the acceleration values through an interface and automatically initiates disk head parking if a fall or sliding of the laptop is detected.

Currently, the following interfaces are supported: * IBM/Lenovo ThinkPad (HDAPS) * Apple iBook/PowerBook (AMS) * Apple MacBook/MacBook Pro (APPLESMC) * HP (HP3D) * Dell (FREEFALL) * Toshiba (ACPI and HAPS) * Acer (INPUT)

On ThinkPads, it is recommended that you use this daemon with the hdaps module provided by tp-smapi rather the one in the kernel, as this will save you a bit of power and will work on a wider range of ThinkPads.