A directed BCI disruption device that fires a focused electromagnetic pulse calibrated to the operating frequencies of common neural interface models. Unlike the omnidirectional NG-1, the SJ-3 is a point-and-shoot device that delivers its disruption field in a narrow cone, affecting only the targeted individual within a five-meter range. The SJ-3's pulse causes a brief but intense disruption of BCI signal processing, manifesting as a 'neural stutter' — a two-to-four-second window during which augmented cognitive functions (enhanced reflexes, threat assessment, sensory processing) experience cascading errors.

The SJ-3 represents NullPoint's second-generation BCI defense technology, incorporating frequency profiles for the forty most common neural interface models in GLMZ. The device automatically scans for BCI signal emissions and adjusts its disruption pulse to match the detected interface's operating frequency, significantly increasing effectiveness compared to the broadband interference of the NG-1. This targeting capability also means the SJ-3 is less likely to affect bystanders' augmentations — though it will still disrupt any BCI system within its cone.

Priced at Φ680, the SJ-3 is a significant investment but has found a market among individuals who have been specifically victimized by augmented criminals and are willing to invest in targeted countermeasures. NullPoint sells the device through security consultants rather than retail channels, partly for liability management and partly to ensure purchasers receive training in appropriate use.