Why introducton is needed to popen a account in bank?

Do you mean an introductory booklet or a person discussing with you what the different accounts are all about, the interest you will or will not gain, the cost of the checks and if you want theirs or not, the requirements about how much money you need to keep in there to keep the account open, and the new changes in the laws and the cost of overdraft fees? Well that's a few of the things that's important for a person to know, but more than that is they want to make their chat neighborly so that you know you can call them with any question you might have. And frankly, people who have large sums to deposit feel comfortable about this manager knowing who they are and want to be greeted by name.