用摄像头采集类似于电话充值卡的图象，对其的卡号，密码区域进行识别，只识别数字。（0-9）但原理相同，你只需改一下字库即可使用。-Camera phone with a prepaid card is similar to capture the image of its card number and password to identify the region, only the identification number. (0-9), but the same principle, you only need to change what font to use.