The system asked for a secondary key — not a code from her authenticator app, but the name of a device she had never registered: "Aster-07." The interface labeled it "Collateral." Aria frowned. Aster-07 sounded like one of the old test phones decommissioned after the prototype crash last spring. She scrolled the inventory list archived in her head: Aster lines, thin matte slabs with a pattern like frost. None were supposed to be active.
