The Ossiform Signal Lattice is a network of piezoelectric filaments threaded through the periosteum of the long bones and integrated into the sternum and clavicles during a multi-stage surgical procedure. Rather than relying on conventional implanted hardware with its associated RF emission signatures, the Lattice uses the skeleton itself as a conductive signal medium — low-frequency data pulses travel through bone conduction pathways and are decoded by a small subdermal processor node seated at the base of the skull. The result is a near-undetectable internal data transmission and storage system that produces no electromagnetic signature detectable by standard sweep hardware.

Zheng-Dao's engineering breakthrough was discovering that the natural piezoelectric properties of cortical bone, when augmented with their proprietary bio-compatible filament weave, could carry structured data at meaningful bandwidths without interfering with normal skeletal function. The filaments osseointegrate within six to eight weeks, becoming functionally indistinguishable from the surrounding bone tissue on conventional medical imaging. Only Zheng-Dao's proprietary resonance scanner — and a small number of reverse-engineered black-market equivalents — can detect the lattice once integration is complete.

The Ossiform Signal Lattice is primarily a tool of the intelligence community, couriers operating in high-surveillance environments, and activists living under authoritarian corporate jurisdictions. It is the implant that most purely embodies GLMZ's central tension: the body as the last sovereign territory, the skeleton as the one place the city's surveillance grid cannot easily reach.