Factors of Authentication

Question 1

Something a supplicant knows

Answer 1

• Personal Identification Number (PIN)
• Password
• Passphrase
• Security Questions/Answers

Question 2

Something a supplicant has

Answer 2

• dumb cards magnetic stripe ID
  cards and ATM cards
• smart cards Chip & PIN cards
• security token (key fob, card reader)

Question 3

Something a supplicant is

Answer 3

• fingerprint
• palmprint
• retina/iris scan
• voice
• keyboard kinetic measurements