The second is a simple password, used for entry into systems that are not very secure, like web sites and e-mail. The third is a longer, more complex password for access into high-security systems, like your corporate network and your online financial data. These are the first passwords a hacker will try when they target you. Any month of the year You should choose a password that will only make sense to you. A PIN is usually used at public machines, like a bank machine or a phone booth.
Pins normally are four-six digits long.
I use a four digit PIN, because I can then use the same PIN for my bank card, my phone card, and others. Your PIN should be something that only you know the meaning of. Maybe it is the address of your favorite restaurant. Maybe it's the number of miles in your car at the last checkup. Maybe it's the number of the cross-town bus you take to work, or the apartment number where you grew up.