Answer:
I am a person who pretends to be someone else
I can be short and sometimes hot. When displayed I'm never cold. What am I?
I belong to you but others use me more often than you do
I can point in every direction but can't reach the destination by myself. What am I?
I mean goodbye for South Americans.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?