Kzer-Za • Kohr-Ah
| Sentient Milieu|
|Kzer-Za • Kohr-Ah|
| Path of Now and Forever|
Ur-Quan Hierarchy • Battle Thrall • Fallow Slave • Oath of Fealty Doctrinal Conflict
|Dreadnought • Marauder • Sa-Matra|
|Excruciator • Slave Shield • Talking Pet|
A slave shield is one of the most significant and recognizable technologies in the galaxy. Developed after the Ur-Quan Slave Revolt by the Ur-Quan Kzer-Za, it is a highly robust, self-maintaining force field implanted around a planet's atmosphere that blocks the passage of all physical objects. It also filters and scatters all radiation that passes through it, causing a visual pulsating red halo effect around the planet, and more importantly scrambling all electromagnetic and even HyperWave communications to and from the surface. It is their universal device for humanely confining other species to prevent them ever becoming a threat to the Kzer-Za's survival and freedom. However, the Kzer-Za, for partially unknown reasons (most likely their unwillingness to use the Sa-Matra), allow a Hierarchy of un-slave-shielded Battle Thralls in contested regions of space.
First used on the Faz homeworld, since then thousands of worlds have been slave-shielded by the Kzer-Za.
Only the Ur-Quan themselves were capable of disabling slave shields; the Kzer-Za had some method for locally neutralizing a slave shield that they used for travel and communication with fallow slave worlds in the Hierarchy, and apparently were able to apply this method globally to un-slave-shield a world if they deemed the race on that world unsafe and necessary to pre-emptively destroy. The Kohr-Ah possessed a similar method; though the agreement between the two races during the Doctrinal Conflict prevents them from using it against worlds conquered by the Kzer-Za, the Death March events indicate that they are fully prepared to use it to destroy the populations of all slave-shielded worlds should they be victorious in the conflict.1
Unfortunately for the Kzer-Za, slave shields are not as perfect a solution to the problem of eternally preventing traffic and communication from a planet as they once thought. Very sensitive HyperWave receivers are able to pick up transmissions from across a slave shield, if the message is sent with enough power; the New Alliance of Free Stars is able to communicate with the slave-shielded Chenjesu and Mmrnmhrm this way, thanks to the Chenjesu's highly refined natural HyperWave-sensing anatomy. Moreover, the Chmmr have developed a method to "crack" slave shields, using a large grid of satellites to introduce disruptions across the slave-shield's surface until it dissipates.2 After the Ur-Quan defeat during the second Doctrinal Conflict, this method is used to free the Alliance races that had been slave-shielded in the aftermath of the Ur-Quan Slave War.
The only species known to have duplicated the Kzer-Za slave shield technology is the Spathi. Their entrance into the New Alliance of Free Stars gives them the opportunity they need to study the slave shield around Earth and duplicate it, which takes them only three months, after which they retreat to obscurity and safety trapped on the surface of Spathiwa, securely protected against any evil space monsters that might decide to eat them.
Planets in our region of the galaxy that are slave-shielded at some point include: