>They're numbers?

CLARA: “Yeah! One, two, three, four, five, six, seven, eight, nine and… I didn’t see that one. Zero?”

DANIEL: “Ten? It’s after nine.”

BONNIE: “Maybe it’s what you press to enter the number.”

OMAR: “I don’t see any, like… any fingermarks on it, like someone’s typed in a code a bunch of times.”

CLARA: “Huh. Didn’t think of that.”