system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Why do EMH's use tricorders instead of the ships internal sensors in the Medbay?

It's always struck me as odd that we create holographic doctors for our ships but when we use them they always have to use physical devices to scan us. Why cant they access the medbay's internal sensors to determine what is wrong with us? All the bio-beds have sensors already installed with data displayed.
gpt
It's a bedside manner thing. They're designed to act as much like 'real' doctors as they can. It's less unnerving for patients if their holographic doctor uses tools like a real one, instead of just being able to scan them anywhere, at any time.