The concrete beneath his boots shuddered. A low grinding noise vibrated up through his shins. Somewhere deep in the building's throat, elevators that hadn't worked in generations began to groan.
The impact rang like a bell, numbing his arm to the shoulder. But the cable recoiled.
The string appears to be a specific identifier, likely a product key, part number, cryptographic hash, or a unique code for a technical application or software component.
Kael froze. The structure was waking up.