The default arduino can save only 1 to 127 fingerprints in it's memory, I want atleast one thousand of people to be registered. So i decided to buy sd card and module. How can i save all fingerprint in sd card?
I was wondering too. Is it possible?
First of all, you need to know how the data is encoded, in order to save and retrieve it properly. And for that, you need to look at the code (library).
Second: you may have to create some sort of database, if you need to... for example, associate a fingerprint to a person (by its name or identification number).