Scanning in Multiplayer shared?

Hey guys!

While playing Starbound in multiplayer, another player used my pixel scanner and could see way more objects than he had scanned before. All of those he named were objects I had already scanned. For a second I thought, it's because he used my pixel printer, but I don't think that makes sense, since as far as I know Starbound does not "remember" which player built something. So, do you know how the game saves scanning results for each player in multiplayer? Could it be that scanning is "shared" among players?