Abstract: The present invention provides a multifunctional touch smart card, having: an operation center, a touch part, a security element, and a battery. The touch part is capable of controlling operation of the operation center and the security element. The battery supplies power to the operation center, the security element, and the touch part. A touch button design is adopted for the smart card of the present invention, so a button of the present invention can be disposed at any position of the smart card. Thus, not only may the card have a more beautiful appearance design, but also it is easier to lay out circuits of the smart card.

Abstract: A communication security system includes a secure communication application module and a chip module. The communication security system is installed in a mobile device. Accordingly, the communication security system of the present invention allows mobile devices of users to encrypt and decrypt communication data between the users. A communication security method includes the steps of generating keys, requesting a key exchange by a first mobile device, receiving a key exchange by a second mobile device, receiving a key exchange by the first mobile device, activating a key by the second mobile device, activating a key by the first mobile device, and starting secure communication between the first and second devices. Thus, the encrypted communication can avoid theft and unauthorized falsification.

Abstract: A communication system includes an HCE application module and a security module. The HCE application module can carry out NFC and transmit an NFC signal in software format. The security module can provide a secure storage for storing at least one NFC applet, receive the NFC signal from the HCE application module, and carry out a process corresponding to the NFC signal. A communication method includes the steps of activating the HCE application module; enabling connection between the HCE application module and the security module; waiting for an NFC signal from an NFC reader; receiving the signal; processing and transmitting the signal to the security module; storing at least one transaction-related key and transaction-related data of the NFC signal and executing a process corresponding to the signal by the security module; and transmitting a responsive signal to the NFC reader.

Abstract: A circuit structure is utilized in circuit connection in a hand-held mobile communication device. The circuit structure is enabled to interconnect electrically a SIM (Subscriber Identity Module) card with a microSD (Secure Digital) memory card installed in the hand-held mobile communication device to enhance transmission of signal and data therebetween.

Abstract: A circuit structure is utilized in circuit connection in a hand-held mobile communication device. The circuit structure is enabled to interconnect electrically a SIM (Subscriber Identity Module) card with a microSD (Secure Digital) memory card installed in the hand-held mobile communication device to enhance transmission of signal and data therebetween.

Abstract: Mobile financial transaction system and method are disclosed for use with mobile payment and secure financial service platform. With the method and system disclosed, users can perform mobile financial transactions with a handheld mobile device. First, a billing information is acquired through the Internet and/or image capturing, and then a microSD flash memory card embedded with security chip and containing a personal financial information and/or near field communication technology is used to communicate with nearby payment devices to acquire a payment information. The payment information is then transferred to a payment gateway to finish a financial transaction. In addition, a secure value added service platform provides follow-up financial services.

Abstract: An encryption/decryption system and method are provided for a mobile phone configured to make a voice packet encryption/decryption during mobile communication. The mobile phone has a connecting interface for an external plug-in device. The encryption/decryption system inside the external plug-in device at least has a control unit, and a security chip. When a security communication mode is activated, the communication between users can be prevented from being disclosed. The present invention is to provide the encryption/decryption system and method for activating a security communication mode between two mobile users communicating in mobile communication, and for preventing communication packets from being disclosed.

Abstract: A memory card supporting near field communication through single wire protocol includes a power management unit, an interface control unit, a data storage unit, a power protection unit and an intelligent unit. The power protection unit is interposed between the power management unit and a near field voltage source of the near field communication unit to prevent short-circuit induced by direct connection there between. Moreover, direct connection between the power management unit and the intelligent unit can also be prevented, which can protect against bursts of excessive voltages or currents that may damage the data in the intelligent unit. Additionally, the power protection unit can prevent power leakage from the power management unit and the near field voltage source, which solves the problem of improperly driving near field communication or insufficient power supply to the interface control unit or intelligent unit.