I'm also do my project by fingerprint access. i read your post i got some imformation and understand little bit how the module work but i have confusion in command such
unsigned char VryPwd[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x07,0x13,0xFF,0xFF,0xFF,0xFF,0x04,0x17};
can you explain me each charector