Supposedly, it is produced by a Danish firm, Empire North. Their website claims:
"It is used to implant a GPS-microchip in the body of a human being, using a high powered sniper rifle as the long distance injector. The microchip will enter the body and stay there, causing no internal damage, and only a very small amount of physical pain to the target. It will feel like a mosquito-bite lasting a fraction of a second…
As the urban battlefield grows more complex and intense, new ways of managing and controlling crowds are needed. The attention of the media changes the rules of the game. Sometimes it is difficult to engage the enemy in the streets without causing damage to the all important image of the state. Instead EMPIRE NORTH suggests to mark and identify a suspicious subject on a safe distance, enabeling (sic) the national law enforcement agency to keep track on the target through a satellite in the weeks to come."
Till proven wrong, count me as a skeptic.