Simplicity

"What do you know about me?", you try to keep your voice in a strong tone, these other prisoners might be volatile.

"Well, for one, you have some sick necklace, man." The taller prisoner says to you, pointing.
For the first time you finally notice a necklace with some sort of inscribed key attached.

"How could I get this here" you mutter to yourself.

"Anything else?"

"Nope, that's about it. Never seen you around the prison before" he says back.

They don't seem that hostile to you, they seem nice enough to you.