hal package
 

What is the purpose of the hal package?

A good explaination can be found here:

http://www.redhat.com/magazine/003jan05/features/hal/

http://www.freedesktop.org/Software/hal
http://www.ometer.com/hardware.html

In short it tries to make it easy for applications to access hardware devices, especially when they are dynamically added or deleted such as with USB drives and digital cameras.

Welcome to LQ!

Two links for you:

How To Ask Questions The Smart Way

and a freebie, which your Google search might have turned up:

HAL - Hardware Abstraction Layer

Thanks
 

So it basically enables plug and play.