Amy uses the American sign language to interact with the AR system. Is this the future? I think it's a good idea and that we should start learning it now.
Fun fact: a quick search on Google revealed that ZF853 is an ultrasonic dog repeller. This is interesting because Natali's hacker friend who helped the crew and who very likely works with Amy and generated the confirmation passphrase goes by the nickname Cluey Dog.
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