The different computer systems
available are not contraceptive methods. These systems serve only as a
tool for the NFP "Natural
Family Planning" method.
The objective of the NFP method is to to
determine the fertile days of the woman, during which either sexual
intercourse is avoided, or other means of contraception must be used.
These computer systems are divided in two groups:
- Most systems are programmed according to
the rules of the "extended" temperature methods
- Other systems support additional data
sources, like the consistency of vaginal discharge or the level of
some hormones (luteinizing hormone measured with sticks).
