The Orphan Signal Cartridge is a single-use broadcast device designed to transmit a compressed data package — message, file, or audio — across a wide-area signal burst that is specifically engineered to be unattributable to any sender. Vantablack Media developed it as a tool for protected-source journalism: a whistleblower or field correspondent can load the Cartridge with content, set a timed or proximity-triggered release, and walk away. When it fires, the burst mimics the signal profile of legacy infrastructure bleed — the kind of ghost transmissions that GLMZ's aging broadcast towers emit constantly — making the source indistinguishable from decades-old equipment noise.

The Cartridge is physically a small cylinder, roughly the size of a flare, with a single data input port and a mechanical timer ring. It contains no identifying markings and is manufactured from materials that resist forensic analysis — the polymer casing dissolves in water over 48 hours, and the internal components are designed to thermally self-erase after transmission. The broadcast itself is a single, non-repeating burst lasting between 0.3 and 1.2 seconds depending on data load, making it nearly impossible to triangulate with standard direction-finding equipment.

Vantablack markets the Cartridge under a press-freedom framework and has successfully lobbied for its classification as a journalism tool rather than a communications device in several jurisdictions. In GLMZ, this legal ambiguity has made it a staple not just of journalists but of anyone who needs to get information somewhere without leaving a trail. The secondary market for used — but not yet fired — Cartridges is surprisingly active, since buyers trust the single-use design to mean no prior data contamination.