Echolocation: By taking the echolocation-production organ of a dolphin, bat, or alien creature, or performing proper transmutation, one can gain the natural equivalent of sonar or radar; very useful for fighting dark. It is not quite motion detection, but it can be used to augment motion detection.

1. Judge distances with absolute precision.
2. Can be used to identify fish, humans, creatures, land formations, and so on. All of these more skill-related options come at a 20% + 5% per level of experience percentile.
3. Halves penalties from blindness.

It has a 1000 foot range for maximum accuracy and a 2000 foot range if one wants to suffer a -20% percentile loss.

Cost: 1 million credits; the prevalence of the possible sources helps defray costs.