There are 3 track magnetic. Track 1 and track 2 is a read-only track, track record in informationis read only and are not allowed to write or edit.
And the existing problems, security card
Poor confidentiality and security of A, card
The magnetic information easier to read, illegal modification magnetic content is easier, so in most cases the card is used as a static data input. Although the third tracks, read and write,and the amount of field, only for applications of small amount, such as a telephone card.
B, application system using magnetic cards need to have reliable computer system and centraldatabase support
In the financial sector, as a financial transaction card card, generally used in conjunction withpowerful and reliable computer network system, amount, transaction records and otherinformation, are deposited in financial institutions in the computer database, the user holds thecard just provide the user‘s main account index information, convenient for the user to quickly find the data in the database.
