If you cant recognize it, try to restart the IC card reader while connecting it to the USB port.The card reader is just an aid tool to read cards, so you need to Dunload a specific app when using it.Can be used for My Number Cards signature electronic certificates, user certificates, etc. e-tax users need to install the software (JPKI, JDK) that is required for e-tax.If you want to read your identity or financial information, you must use it in conjunction with a third-party system.For example, if you do not install financial software or other software, it will not automatically read large card information.DOD and USG users require a third-party CAC enabler program.From the "Download User Client Software" of the Public Personal Authorization Service Ports - you will need to Dunload the software according to your PC.Not compatible with residential basic register cards that do not have metal terminals.The IC card must be inserted from the IC chip side up in the direction of the arrow. 10. My number needs to download the APP designated by the Department of Office.