Human palmprints show a number of well defined lines. These include major palmlines, often called the principal lines, and wrinkles. Principal lines and wrinkles on palm are distinguished by their position and thickness. Most palmprints show three principal lines: heart line, head line and life line. Properties of the principal lines can be summarized as follows:
- 1.
Each principal line meets the side of the palm at approximate right angle, when it flows out
- 2.
The life line is located at the inside part of the palm, which gradually inclines to the inside of the palm
- 3.
In most cases, the life line and head line flow out of the palm at the same point
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(2009). Principal Lines. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_604
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DOI: https://doi.org/10.1007/978-0-387-73003-5_604
Publisher Name: Springer, Boston, MA
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