The code I use for our stuff is (business name abrev.)-(animal)-(morph)(sex)(#). For the bussiness name I put GG which stands for Gecko Geeks. For animal in our case it would either be BP, LG(Leopard Gecko) or CG(Crested Gecko). For morph would be and abreviation, like for a spider I use SP. For sex I put either M or F. Then for #, here is and example. Say I have 5 Spiders, and Im making a card for the 4th I got (doesnt matter what order they are in), I would put this as there ID: GG-BP-SPM4. Does any of this make sense?