|Anime||Kiddy Grade episode 10|
The ability "Amplifier" enables the user to improve their visual perception tenfold, allowing them to see further than others do. It also enables the user to see the "light of life in a person" as well as seeing it fade when a person dies. This not only allows them to see whether their target is dead, but also makes them able to estimate whether they should continue the pursuit of their target, or they should just leave them alone, as they won't survive anyway.
The only known user of this ability is A-ou. He uses it mainly for tracking purposes, but he also saw a person's life fading.