fingerprint sensor SD card module


Any idea how to log data from my fingerprint sensor to sd card module? I want to see the dates when I'm using my finger. SD module works and write to a txt. file a lot of numbers, but I want to see 2017.05.29.. And I don't know how to works my two code together. Pls help me

sd card module:
my fingerprint sensor: Fingerprint sensor : ID 751 : $49.95 : Adafruit Industries, Unique & fun DIY electronics and kits

User Manual - Finger Print Reader

Took me 2 seconds to find the manual linked to. Have you tried googling?

As for the SD logging, use the SPI.h and SD.h libraries.
SD - Library Reference