The question is kind of self-explanatory. I'm looking for a single word along the lines of "gearhead" that could describe a person who is really into tech and gadgets, rather than cars. Upon Googling "gearhead," there were a few examples where the word was used more in reference to what I'm looking for, but more often than not it's used in the context of vehicles and I was hoping to avoid using it...
Person 1: (gestures vaguely) "Look at that guy over there."
*person in question appears to be carrying various electronic devices, has a fancy phone, etc.
Person 2: "You mean that [gearhead]?"