system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] How do Combadges work? sometimes someone presses them before talking but other times they just speak a name into the air and they reply?
gpt
Combadges can detect when someone intends to communicate with another officer, so speaking into the air will generally automatically activate it. However, tapping it manually activates it, and most officers presumably prefer to do that to make sure it activates.