Portable identification device, identification system using electronic paper and operation method thereof

A method for operating an identification system using electronic paper, including:

• providing a portable identification device including an electronic paper module and a wireless communication module electrically coupled to the electronic paper module, wherein the electronic paper module includes a processing unit and a display unit electrically connected to the processing unit;
• transmitting at least external display information to the wireless communication module through an external communication module of an external operation device;
• receiving the external display information through the wireless communication module and transmitting the external display information to the processing unit of the electronic paper module;
• and
• driving the display unit through the processing unit to allow the display unit to display an image corresponding to the external display information according to the external display information, wherein the image includes at least identification information of a user and subsidiary information, wherein the identification information comprises at least a picture of the user;
• and
• comparing, with an external processing module connected to a database and included in the external operation device, the identification information with a file information stored in the database for updating the external display information.

A portable identification device, including:

• a wireless communication module electrically coupled to an external communication module included in an external operation device, wherein the external communication module is configured to provide at least external display information, and the wireless communication module is configured to receive the external display information from the external communication module;
• an electronic paper module electrically coupled to the wireless communication module, the electronic paper module including a processing unit and a display unit electrically coupled to the processing unit, wherein the processing unit is configured to receive the external display information from the wireless communication module and to drive the display unit according to the external display information to allow the display unit to display an image corresponding to the external display information, wherein the image includes at least identification information of a user and subsidiary information, wherein the identification information comprises at least a picture of the user;
• a timer module including a clock timer electrically coupled to the processing unit, the clock timer being configured to allow the processing unit to drive the display unit at a predetermined time for displaying the image on the display unit;
• and
• a housing, wherein the wireless communication module, the electronic paper module and the timer module are disposed in the housing in such a manner that the image displayed on the display unit is visible from the housing;
• wherein the external operation device further includes an external processing module connected to a database, wherein the external processing module is configured to compare the identification information of the user with a file information stored in the database for generating the external display information.