Does everyone have different fingerprints?

Yes.  Small ridges, called friction ridges, begin forming on the hands and feet of the fetus before birth, and will grow larger as the person grows, but the basic shapes and locations of the minute detail does not change throughout a person’s lifetime.  The ridge formations go through a process of differential growth where they form randomly based on the pressures within the womb. The friction ridges will persist after the death of the individual, until decomposition sets in.