We made this without android studio because we only know to code with python since we are first year students. So we tried our best to make an app using python itself, so we came to know that kivy framework of python can build android apps. Hence, we made it using kivy and python. As you know always building apps with android studio is better, so we had some really bad bugs while building it with kivy and python. And the zbarcam module has lot of limitations, so it was the biggest hurdle we had to cross.