External devices

Abstract

The invention discloses external equipment applied to a hand-held device. The hand-held device comprises an interface; the external equipment comprises an interface module, a wireless communication module, a storage module and a micro-control unit, wherein the interface module is connected with the interface of the hand-held device and is used for obtaining electric energy from the hand-held device; the wireless communication module is connected with the interface module; the storage module is used for storing the function types and use information of the external equipment; the function types comprise canteen consumption, bus and subway card consumption, attendance function and door access function; the micro-control unit is connected with the wireless communication module, the interface module and the storage module and is used for carrying out external non-contact communication through the wireless communication module and storing obtained card swiping information into the storage module, wherein the card swiping information comprises amount of canteen consumption, amount of the subway card consumption, attendance time and door access. By utilizing the external equipment, the problem that a small card in the hand-held device cannot be replaced but an NFC (Near Field Communication) technique is used, is solved.

Description

technical field

[0001] The invention relates to the field of wireless communication, in particular to an external device of a handheld device. Background technique

[0002] People often need to use various cards in life, such as bus and subway cards, attendance cards, meal cards, etc. In order to make it more convenient for people to use these cards, the ordinary SIM card inside the mobile phone has been transformed and realized Wireless smart card technology (i.e. RFSIM card) realizes that users can hold the mobile phone to swipe the bus and subway card to board the bus, print the time card for get off work and attendance, and swipe the card to eat in the cafeteria. It is very convenient and reduces the burden on users to carry multiple cards.

[0003] However, the existing mobile phones are developing towards ultra-thin. In order to reduce the space occupied by the SIM card, Micro-SIM cards (also known as USIM cards, small SIM cards) have been released at present, but Micro...

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