Single post in Account Breach incident

neit i was wondering if its physically possible for pokefarm q to generate a few 8 digit codes per user to keep and to use to put in when getting online to verify its them like one of googles 2 step verification steps https://www.google.com/search?q=google+two+step+verification+code&client=safari&channel=ipad_bm&prmd=nvi&source=lnms&tbm=isch&sa=X&ved=2ahUKEwi7l_Hw5YfrAhW7HzQIHaGZCqgQ_AUoA3oECAoQAw&biw=1080&bih=707&dpr=2#imgrc=TSdUflZMucH31M it seems like one of a safer options if its able to be implimented