I think the use of type on a path works because the type flows well along with the image of a fingerprint it is portraying. The type is simple to read since it flows with the shape of the image and isn’t random.

I think the poster on the left works the best. This is because there is a pretty good figure ground relationship. I also like how the grey is used for the smaller text, because it still stands out despite being a darker shade. The poster on the right works the least because of how empty it is. I can kind of understand the concept, though I feel as if it could have had a bit more detail.