Trust is a rare commodity, among those Kindred who value it enough to even consider such a thing a commodity at all. This power was concocted between Shadows and Lords in the Dark Ages as a means of verifying that the message sent by one Kindred was, in fact, the same that reached the other. In those cities and outposts that made use (or still make use) of this power, it has the added value to the local Mekhet of making them advantageous to the local Ventrue.