Authenication

Question 1

three main factors of authentication

Answer 1

• something you are: username, bank account, unique identification etc.
• something you know: password, pin, answer to a question
• something you have: swipe card, biometrics (fingerprint etc.)

Question 2

captchas

Answer 2

internet bots can submit data automatically to online forms, they could enter lots of data at once and crash the system, or create fake accounts, damaging the usability of the system

captchas verify that the user is human, preventing against software that enters data