A magnetic stripe card classification stripe type: General anti-magnetic card (300oe) high resistance to magnetic cards (3500oe) directly applied to printed type: low coercive force card (300oe) (eg: Park tickets) high resistance to magnetic cards (2700oe) ( such as: Metro cards, phone cards) Description: Anti-magnetic: magnetic stripe is used to measure the resistance due to the influence of external magnetic field hospital and cause data loss, but also to offset the anti-demagnetization. Anti-magnetic (coercive force) units are OE (Aust); magnetic stripe low resistance: resistance to demagnetization of ordinary magnetic stripe, magnetic generally 300 ~ 650 (OE); high resistance to magnetic stripe: high diamagnetic magnetic stripe, the magnetic resistance to general as 2750 (OE), 3500 (OE), and 4000 (OE) Second, there is a track on the magnetic stripe and the magnetic stripe three tracks can be read when used, can be written. Track 1 can record digital (0-9), letters (A-Z) and some other symbols (such as brackets, separators, etc.), the largest record 79 numbers or letters. Track 2 and 3 characters recorded only numbers (0-9). Track 2 recorded maximum 40 characters, tracks three maximum recordable 107 characters. Third, security and problems of magnetic stripe card A, card, confidentiality and security of poor information on the magnetic strip is easier to read out the contents of the magnetic stripe on the illegal modification is also easier, so in most cases the magnetic stripe cards as static data input. Although the first three tracks can read and write, and have the amount field, it is only for a small amount of application areas, such as phone cards. B, using a magnetic stripe card applications need reliable support computer system and the central database in the financial industry as a financial transaction card, magnetic stripe cards, usually with a strong, reliable computer network system, the amount of transaction records and other information Financial institutions are saved in the database of the computer, the card user held only provides an index, such as the user's primary account information, easy to quickly find the user data in the database. Contact: Liu Liping Tel: 13600150573 QQ: 1529791127 Address: Longgang District, a new industrial zone Hengchangrong Kimura F, 3rd Floor