Harness

A harness is a piece of technology used by the invaders in the series Falling Skies. At first believed to be a form of mind control the true effects are much more sinister.

In the Series
Shortly after the Skitter invasion of Earth the aliens begin rounding up children between 8 and 16 and placing a slug-like device on the child's back that renders the child a mindless slave of the aliens. Human observation of the aliens and the victims led the resistance to believe that the children were being used as a form of slave labour due to the aliens ordering them to scavange metal and other raw material.

Initial attempts at removing the Harness were unsuccessful and ultimately killed the child in question. It was only later that a resitence doctor came up with a theory that not only explained why, but ultimately could safely free the victim. After capturing a harnessed child the doctor examined the child and noted his dilated pupils and came to the conclusion that the harness released a powerful drug into its victim to keep them compliant. When the harness was forcibly removed the child went into shock from withdral and died. Seeing that morphine was the closest Earthbound medicine they had to the drug they used it as a bridge during an operation on a boy to cut the harness off, freeing the boy from alien control. This process was again repeated on a captured group of harnessed children that included Tom's son Ben.

Weeks later concerns were raised by some of the resistance members over Ben and another boy named Rick. Whilst the remaining spikes from the harnesses in the other children had fallen out of their backs there's remained in place. Also Rick was shown increasingly bizarre behavior and an examination of Ben revealed bizarre skin growth around the spikes. On a hunch Dr. Anne Glass autopsied a corpse of a Skitter and made a horrifing discovery: buried in the corpses back was a harness. This meant that not only were the Skitters themselves slaves but they had most likely been another lifeform before they were harnessed. Revealing her findings to Tom they realized that the aliens were using children not only as slaves but also to replenish their forces.

At the end of the series Tom is forced to go with the Alien leaders, the Slenders, in exchange for releasing Ben from the conversion process.

How It Works
Once a harness is placed on a victim's back it grows soft roots that attach to the nervous system that then harden, allowing the aliens to control a victim's actions. It also releases a powerful drug into the victim keeping them docile and compliant. The harness also releases another unknown substance that will eventually mutate the victim into a Skitter. This fate can be avoided if the harness is removed after a short amout of time i.e. a couple of days or weeks. In such cases the remains of the harness will then be sloughed out of the victim's back. However should the harness have been in place for several months the process seems to continue, though at a slower process.

The harness also acts has a method of communication between humans and aliens. The Skitters use it to telepathically communicate with their captives and the Slenders and Skitters can use it to make the victim a mouthpiece for themselves when dealing with humans (or, most likely, other species they have invaded prior).