Which type of fingerprint pattern has no delta?

The fingerprint pattern that has no delta is the arch. In fingerprint analysis, the delta is a point where ridge lines bifurcate, and this feature is typically present in whorls and loops. Arches, on the other hand, are characterized by ridges that rise in the center and flow outwards, forming a continuous pattern without any significant deviations or bifurcations that would create a delta.

There are two main types of arch patterns—plain arches and tented arches—and neither contains any delta formations. This distinct absence of deltas differentiates arches from other fingerprint patterns, leading to their unique classification. Understanding this characteristic is essential for accurate fingerprint identification and classification in immigration enforcement and beyond.