FINGERPRINTS

There are only four basic patterns you need to be concerned with: The Whorl (or Swirl), the Arch, the Loop, and the Triradius. All other markings are merely combinations and variations of these four patterns.

Each person will have a Whorl, Arch, or Loop on each fingertip (the fingerprints), a Triradius on the Mount of Luna and beneath each finger, and most will also have two other Whorls or Loops elsewhere on the hand. Patterns can also be found on the second and third phalanges of each finger.
The Whorl 
The Whorl can be a Spiral, a Bulls-eye, or a Double Loop. Whorls are points of intensification, and should be noted whenever they appear.
The Arch 
This pattern can appear as a Flat Arch, or a Tented Arch. Pay special attention to any Arch which rises very high.
The Loop 
Loops can rise towards the fingertips, or fall towards the wrist. The Common Loop moves towards the thumb, while the Radial Loop (Reverse Loop) moves towards the percussion side of the hand.
The Triradius 
The Triradius (also called the "Delta")can be used to pinpoint the exact center of each mount. The Mounts can then be seen as Centered, Leaning, or Displaced.
Whorls
The three types of Whorls are the Spiral, the Bulls-eye, and the Double Whorl (also called the Double Loop). The Spiral and Bulls-eye prints are quite similar in their interpretations, the latter giving slightly more focus. Anywhere on the hand the Whorls highlight and emphasize that particular region, making it an area of focus in the subject's life.
Double Whorl
The Double Whorl is perhaps the most misunderstood of all Dermatoglyphic markings. In general, interpret the Double Whorl as you would the other Whorls, but because it is made up of two interconnected loops, there is one major difference: Until the personality is developed there will be a strong tendency towards exaggeration, manipulation, and subversive actions in the area of life indicated. For example, a person with the Double Loop on both thumbs is likely in early life to use deceit to help assert their will over others. Owners of this print gravitate towards dramatic careers, and with daily effort can easily attain great renoun.
Radial Loop
A looped print entering and leaving from the thumb side of the hand is called the Radial Loop (sometimes called the Reverse Loop, or Inventor's Loop). It reveals the ability to create an entirely new style or system. These people have keen visual memories, able to recall not only images, but also the actions and emotions which accompanied these images.
Common Loop
The most common type of fingerprint is the Common Loop that reveals the ability to draw on ideas from many sources, and blend them into a unique style. The Loop reveals a natural "Follower". The desire to lead others is often present, but NOT the ability. Apply the meaning of the Loop to whatever region in which it is found.
The Arched Print
The Arched Print denotes traditional values and high morals. In almost every case, the moral values are due to some "past" which the subject is ashamed of. People with this print find it difficult to view their own negative traits, and to understand that the "past" which they look upon with distain or shame was merely an experience needed for the personality to develop fully. The Flat Arch follows tradition with little independent thought, while the Tented Arch reveals a depth of intellect.