The Primal Codex, one of the three last known relics of the Kathol
The Primal Codex, also refereed to as the Golden Codex or simply as the Codex, was a Holocron like construct created by the ancient Kathol thousands, or perhaps millions, of years before the rise of the Galactic Republic.
Often identified as being glasslike and crystal-esque, the Codex was fragile, with rough handling or falls damaging it, but remarkably light in weight, and self-repairing of physical damage. Most extraordinary of all, the Codex reacted to the Force in particular ways, and could only be activated by a Force-sensitive. The Codex also illuminated when held by a Force-sensitive, glowing a bright golden hue of such radiance, it was once likened to the brilliance of a sun.
In line with the Force-technology and biotechnology the Kathol were known for, the Codex was semi-organic in nature, able to "commune" empathically with a sufficiently aware Force-sensitive. In doing so, the Codex allowed a Force-sensitive to locate other Force-sensitives and even quantify their strength through the Force. The Codex was also known to significantly augment the natural strength of a Force-sensitive to nearly colossal proportions. The Aing-Tii monks revered the Codex with religious fervency, and acted as the keepers of the device since the first era of the Galactic Alliance.