…It’s a Watch. A device that stores Time as quantum cash – unforgeable, uncopyable quantum states that have finite lifetimes,…
“…It’s a Watch. A device that stores Time as quantum cash – unforgeable, uncopyable quantum states that have finite lifetimes, counterfeit-proof, measures the time an Oubliette citizen is allowed in a baseline human body. Also responsible for their encrypted channel to the exomemory. A very personal device.”
–Hannu Rajaniemi in The Quantum Thief