When the protagonist of BIrd Girl, whose job it is to find and salvage lost or abandoned scooters, finds a crashed rider along with her errant scooter, her life quickly proves the point of real-world privacy activists: that privacy is a worthy goal even if you think you have nothing to hide. Upon realizing that the fallen rider is a “masker,” or someone who synthetically alters her features to outsmart facial recognition systems, the protagonist makes a fateful decision, which set...