Al-jawab billahi at-taufeeq (the answer with Allah's guidance)
It is confirmed that The Prophet (sallallaahu alayhi wa sallam) said: "Five are among the Fitrah acts: Circumcision, shaving pubic hair, plucking out armpit hair, clipping one's nails and trimming one's moustache." [Al-Bukhaari and Muslim]
The pubic hair could be removed by many means, but the Arabic word that is used is Istihdaad, which is using the iron i.e. a blade or a similar tool. Imaam An-Nawawi, may Allaah have mercy on him, said: It is better to shave the pubic hair.'
The area of shaving for a person (male / female) is above and around the private parts. If possible, it is commendable to shave around the hind private parts as well. (Al-Kaamil, commentary of Muslim; Imaam Nawawi vol. 1 pg. 128).
