In palm scanning, what features are identified as unique to each individual?

In palm scanning, the primary features that are identified as unique to each individual are creases, ridges, and grooves. These characteristics form the distinct anatomical patterns found in the skin structure of the palm. Each individual's palm has a unique combination of these features, making it an effective biometric identifier.

Creases, ridges, and grooves serve as identifiers because they are influenced by genetic factors and individual development, leading to variations that are specific to each person. The uniqueness of these patterns allows for high accuracy in recognition systems that utilize palm scanning technology, making it a reliable method for identity verification.

The other options do not serve as effective biometric identifiers for palm scanning. Color and brightness can vary based on lighting conditions and do not provide consistent, individual-specific traits. Finger lengths and angles pertain more to the overall hand properties rather than the unique skin characteristics necessary for biometric validation. Nose shape and eye distance are unrelated to palm scanning, as they involve facial features rather than the features of the palm itself.