1, improve management efficiency: swiping the card into the library of Nanjing Agricultural University can reduce the cost of human management and improve the management efficiency of the library. Through the credit card system, the library can manage readers' library entry and lending behavior more conveniently, and avoid mistakes and confusion caused by human factors.

2. Guarantee the security of the library: swiping the card into the library of Nanjing Agricultural University can effectively guarantee the security of the library. Through the credit card system, the library can control readers' entry behavior, avoid irrelevant personnel from entering the library, and reduce security risks.