Good Day to all...
I've brought a fingerprint scanner different from adafruit and tried it on arduino. It works fine but the problem is how do I store the fingerprint of the user or how to register the user.
Here's the user guide on the fingerprint scanner ADST11SD300&310 UserGuide.doc - Google Drive
I hope you can help me on the flow of the code pleas...
Judging by that link, the fingerprint is represented by just under 500 bytes. If that's the case you could hard-code that in PROGMEM, or read and hold it in RAM, or save it in EEPROM, or write it to an SD card, or (if the Arduino has a USB connection) send it over the USB serial link and store it on the host computer. Really, it's up to you to decide how and where you want the fingerprint data to be stored - there are lots of options.