Twilight Princess HD has a new item: the Ghost Lantern. It makes it easier for the player to track down Poes in the game. And to see exactly how that works, check out the video below, courtesy from the guys from GameXplain.
Poes are located all over the world in Twilight Princess, but there were no specific guides as to where to find them. You only got a rough idea of how many were at a given location. The new Ghost Lantern item helps to better track them down, and works both at night and during the day (although you can only get the Poes at night).
The video below explains how to get the Ghost Latnern item and how to use it in game.