Sam looked a bit annoyed at the guy. He was just trying to help, but if this guy was going to be acting like this he could forget about it. Sam was about to walk away, when the girl who seemed to know the guy told him he was just hungry. The girl seemed nice. "It's fine. Anyway, I was talking the truth about the tablet. I can show you." He said, then walked in the direction of the library, motioning for the two to follow him. 

Once at the library, he walked towards one of the desks at the corner. He looked underneath it, checking if it was still there. It was. Taped to the bottom of the desk, with the tape in the same colour as the desk itself covering it completely, was a rectangle device. Sam removed a bit of the tape to confirm it was a tablet, and indeed it was. He took the tape off the tablet and layed it on the table. 

"I saw it a few days ago when I was studying and dropped my snack. Back then I thought it was some kind security device of the school, but I kept wondering why it was done so unprofessional. I mean, there are a lot of more modern technological devices that for example you could install easily inside the wall. That way it goes unnoticed and you have more reliability. Why were you guys looking for it anyway?"