Eien/Skills
Eien is a spotter with two somewhat unusual talents.
In addition to her ability to scan the targets and environments around herself, she's also telepathic; she can speak directly into someone else's thoughts. She can only transmit words; she CANNOT read the thoughts of others. However...
She is also psychometric.
Psychometry is essentially the ability to receive impressions left behind by others on objects or in places, provided she has the ability to touch those places or objects. Her success rate is affected by a number of things, such as the item or place's importance to the person who held it/walked through it, their emotional state at the time, how many other people have held or interacted with it since then, and how long it has been since the person was there/last held the object, etcetera.
For example: Holding someone's prized locket might reveal a wealth of intense impressions, while picking up a take-out carton they only used once might only give fleeting, vague impressions. Following someone's trail down a rarely used alleyway would be extremely easy, but tracking them through the subway would be extremely difficult, and would be downright impossible during peak hours. In general, it's easier for her to get a sense of emotions and events if they were intense; weaker feelings are more difficult to read.
Items or places impacted by supernaturally-influenced people, objects, and events are easier for her to read than those only touched by mundane of the same, and of course it's much simpler for her to get impressions about people she knows than it is for her to read things about total strangers, since she already has context to make sense of things -- a 'feel' for them.
Using this ability, she can even track someone's location within the city, provided they're within several miles of where she is, and they're within the normal, mundane world -- i.e., not in Mikage-Cho, for instance, or a TV dungeon.
*PLEASE NOTE: I'm putting this on the wiki because it's a neat resource for adding depth to scenes, so I'm trusting people not to use that information IC without actual IC knowledge.
**PLEASE REALLY REALLY NOTE: I am all about upholding consent, and don't intend to force this on anyone's character unless doing so is the result of ICC. I will always ask before posing anything related to this, and I'm probably willing to come up with reasons to foil it in certain situations, if asked (as long as the situation doesn't involve aforementioned ICC). ICly, Eien chooses to respect the privacy of others, as a general rule, so she would only ever snoop if given cause to!