Tei Tei no Mi

Introduction
the Tei Tei no Mi (Tei literally meaning spy) is a paramecia devil fruit that allows it's eater to remotely observe or know the condition of a chosen person from anywhere in the world, provided they have something connected to that person.

Usage
This fruit requires somethign belonging to the target in order to be used against them. While this can be something abstract, such as a name, physical things are required to get useful information. Knowing the name of the target, it is possible to know whether or not there is a person alive going by that name, and if they can visualize their target's face as well they can choose a specific person, but it is still only able to confirm their existance without a physical object. In order to learn more about the target, the user needs either something that belongs to them, or ideally a part of their body such as a hair or a drop of blood.

Weaknesses
The user suffers from standard Devil Fruit weaknesses.