Please can any one share me wht is the function of laser pen that is to say use within computer?

Please can any one share me wht is the function of laser pen that is to say use within computer?

it sounds similar to what you are talking in the region of is probably a bar code scanner which could be used to hang on to track of inventory or improve notes entry accuracy.
If you hold a tablet PC, the laser pen allows you to move the cursor or write on the screen contained by certain applications. For more information contact the PC capitalist or visit the site below for a more detailed explanation.