A system comprising a mobile device, a store terminal and a payment server, wherein the mobile device comprises: a memory storing executable instructions; at least one communication interface configured to transmit data to or receive data from a vehicle terminal and the payment server; and a processor configured to provide the data for paying by executing the instructions, wherein the instructions comprise: receiving a license plate number from the vehicle terminal; obtaining, based on a user input, purchasing item information for an item and credit card information to pay for the item; providing, to the vehicle terminal, the received license plate number and the purchasing item information for the item; and transmitting the received license plate number, a total cost of the item, device information regarding the mobile device and the credit card information to the payment server, wherein the store terminal is configured to: receive the license plate number and the purchasing item information from the vehicle terminal, and transmit, to the payment server, a request for a payment authentication result comprising the license plate number and a total cost of the item based on the purchasing item information; and wherein the payment server is configured to: authenticate payment of the item based on a comparison of the total costs received from the mobile device and the store terminal, respectively, the store terminal having transmitted the same license plate number as the license plate number received from the mobile device. a memory storing executable instructions; at least one communication interface configured to transmit data to or receive data from a vehicle terminal and the payment server; and a processor configured to provide the data for paying by executing the instructions, wherein the instructions comprise: receiving a license plate number from the vehicle terminal; obtaining, based on a user input, purchasing item information for an item and credit card information to pay for the item; providing, to the vehicle terminal, the received license plate number and the purchasing item information for the item; and transmitting the received license plate number, a total cost of the item, device information regarding the mobile device and the credit card information to the payment server, wherein the store terminal is configured to: receive the license plate number and the purchasing item information from the vehicle terminal, and transmit, to the payment server, a request for a payment authentication result comprising the license plate number and a total cost of the item based on the purchasing item information; and wherein the payment server is configured to: authenticate payment of the item based on a comparison of the total costs received from the mobile device and the store terminal, respectively, the store terminal having transmitted the same license plate number as the license plate number received from the mobile device. receiving a license plate number from the vehicle terminal; obtaining, based on a user input, purchasing item information for an item and credit card information to pay for the item; providing, to the vehicle terminal, the received license plate number and the purchasing item information for the item; and transmitting the received license plate number, a total cost of the item, device information regarding the mobile device and the credit card information to the payment server, wherein the store terminal is configured to: receive the license plate number and the purchasing item information from the vehicle terminal, and transmit, to the payment server, a request for a payment authentication result comprising the license plate number and a total cost of the item based on the purchasing item information; and wherein the payment server is configured to: authenticate payment of the item based on a comparison of the total costs received from the mobile device and the store terminal, respectively, the store terminal having transmitted the same license plate number as the license plate number received from the mobile device. receive the license plate number and the purchasing item information from the vehicle terminal, and transmit, to the payment server, a request for a payment authentication result comprising the license plate number and a total cost of the item based on the purchasing item information; and wherein the payment server is configured to: authenticate payment of the item based on a comparison of the total costs received from the mobile device and the store terminal, respectively, the store terminal having transmitted the same license plate number as the license plate number received from the mobile device.