It must start with a capital letter and then a small letter followed by a number, for example: Za123456 or 123456Za.

First of all, the password setting must meet the requirements. It must be a combination of letters and numbers. Letters are case-sensitive. There are the following combinations: uppercase letters plus numbers, lowercase letters plus numbers, numbers plus lowercase letters, numbers plus uppercase letters, numbers plus uppercase and lowercase letters, and uppercase and lowercase letters plus numbers.

You must have a simple way to remember the password you set, otherwise it will be very troublesome when you forget the password. Try not to have several passwords that are the same. If someone else knows the password, you can reduce the loss as much as possible.

The word "password" is not unfamiliar to people, and people can give many examples of using passwords. For example, "password" is used in secure communication equipment, and "password" is used by individuals to withdraw money from the bank.

Use "password" for computer login and screen saver, use "password" to open safe, use "password" for children to play video games, etc. But the "passwords" mentioned above are not all real passwords. Except for passwords used in secure communication equipment, others use not passwords, but a specific secret code or password.

Password considerations

have a long history. Ciphers have been used in ancient times to convey secret messages. In modern and modern wars, codes are indispensable for transmitting intelligence and commanding wars, and they are also inseparable from diplomatic struggles. Passwords are generally used to maintain confidentiality during information communication transmission and storage. With the development of computers and information technology, cryptography technology has also developed very rapidly, and its application fields have continued to expand. In addition to information encryption, passwords are also used for data information signature and security authentication.

In this way, the application of passwords is no longer limited to serving military and diplomatic struggles, it is also widely used in social and economic activities. Today's world has seen a trend toward socialization and personalization of password applications.

For example: cryptography technology can be applied in e-commerce to identify the identity and commercial credit of both parties in online transactions to prevent "hackers" and fraud in online e-commerce; it can be used in value-added tax invoices , can prevent counterfeiting and tampering, eliminate all kinds of behaviors that use VAT invoices to steal, leak, evade, and defraud national tax revenue, and greatly facilitate tax audits.

When used in bank check identification, it can greatly reduce the financial crime of using fake checks to commit financial fraud; when used in personal mobile communications, it can greatly enhance the confidentiality of communication information, etc.