Itqualityassurance
Emphasis on a citation in the Pin Length link: The inventor of the ATM, John Shepherd-Barron, had at first envisioned a six-digit numeric code, but his wife could only remember four digits, and that has become the most commonly used length in many places. It started as 4 for a very empiric reason!
- Why are PIN numbers 4 digits?
- What is a 4-digit personal identification number?
- Is a PIN number always 4 digits?
- How many digits are used in a security PIN?
Why are PIN numbers 4 digits?
Most ATM and POS software does not support PINs longer than 6digits, and many input devices can only accept four-digit PINs. - 4-digit PIN allows 10,000 possible combinations — and you normally only get three chances to enter the correct #PIN, before the machine 'swallows' the card.
What is a 4-digit personal identification number?
Personal Identification Number is a 4-digit code, a combination of numbers which helps the client to have access to the credit card. This number is created to provide secure checkup of the holder's identity.
Is a PIN number always 4 digits?
However, it doesn't mean that you should choose a 4-digit PIN. The more digits you add to your PIN, the safer it gets (although it becomes a little harder to remember too). For that reason, many banks make it mandatory for their users to choose 6-digit PINs.
How many digits are used in a security PIN?
For your safety and security, Visa, Mastercard, and Discover all use a 3-digit Security Pin Verification Number (also known as CVV). You'll find this 3-digit number printed on the back of your credit card; it is the last 3 digits on the signature line (see below).
