"No, it doesn't." In fact, most Federation computer technology was in a vacuum environment, made memorable by the time Miles had dragged him along inside a console and Dax had needed to transport pressurized air into the chamber in front of them.

He turns the tricorder so Wan can see the screen--he doesn't expect the man to be able to interpret the information there, but there's a standard heartbeat monitor, slowly changing numbers and figures, readings of energy that Julian barely even knows how to interpret and he knows how to read a tricorder screen.

"This reads information about you that will make it easier for us to help you should you get sick or hurt."