Iyini i-PIN?
Inombolo yokuhlonza umuntu (i-PIN), noma ngezinye izikhathi inombolo ye-PIN noma ikhodi ye-PIN, iyikhodi yokungena yezinombolo (ngezinye izikhathi i-alpha-numeric) esetshenziselwa ukuqinisekisa umsebenzisi ongena ohlelweni.  I-PIN iye yaba isihluthulelo sokwenza kube lula ukushintshaniswa kwedatha yangasese phakathi kwezikhungo ezahlukene zokucubungula idatha kumanethiwekhi amakhompyutha ezikhungo zezimali, ohulumeni, namabhizinisi. I-PIN ingasetshenziselwa ukuqinisekisa izinhlelo zebhange ngabanikazi bamakhadi, ohulumeni ngezakhamuzi, amabhizinisi ngabasebenzi, namakhompyutha ngabasebenzisi, phakathi kokunye ukusetshenziswa.  Ngokuvamile, ama-PIN asetshenziselwa ukuthengiselana kwe-ATM noma i-POS, ukulawula ukufinyelela okuphephile (isb. ukufinyelela kukhompyutha, ukufinyelela emnyango, ukufinyelela emotweni), ukuthengiselana nge-inthanethi, noma ukungena kuwebhusayithi evinjelwe.