He can grab one of the red cards, yes. The machine doesn't look like it has a standard plug, so it's likely being powered from beneath the machine somehow--and the machine is impossible to move or open without tools. It's actually very well-made; it looks beyond modern-day tech even though it must be more casual consumer technology.

Searching building 80, Tadashi will find an unopened bar of soap, a hard, black plastic case that would fit his tablet, and a small green umbrella.