When Voldemort initially summons his Death Eaters to the graveyard following his resurrection in Goblet of Fire, he uses his wand and presses it into Wormtail's Dark Mark, which calls his Death Eaters instantly to his side.
What kind of magic is this?
It's not a Portkey because each Death Eater has their own Dark Mark, and the Dark Mark isn't an item someone can grasp onto (unlike, say, a manky old boot!) Not to mention that presumably Voldemort is summoning his Death Eaters from all over the UK, so they can't come together as a group.
It doesn't seem (to me) to be a summoning charm, like Accio Deatheaters.
When the Death Eaters are summoned to Voldemort's side, they do Apparate there, but how do they know where to Apparate to when they are summoned?
This leads me to wonder if the Dark Mark works similarly to Dumbledore's Deluminator? Voldemort summons. The Death Eaters on their ends receive some kind of signal. They must Apparate to Voldemort. How do they know where to Apparate to?
If it is the same magical principle behind both the Dark Mark and the Deluminator, it does seem an interesting contrast between different applications of the same magic source, i.e. the light versus the dark implementation of magic.
So, yes. Does the Dark Mark act in the same way as Dumbledore's Deluminator?