Today's technological developments can help all human work, which can initially be done in the usual way, if added a technology in it, then the work can be easier. One of them is when we travel and carry bags, we have to prepare whatever items we have to carry, and carry the items in the bag. Sometimes we forget the things we have to carry and from that problem, we have to go home first to get the items that must be taken and that can take a lot of time. To overcome this problem, the author has built a prototype smart bag. The prototype can minimize lags to carry their carry-on items. This smart bag is built with microcontroller, RFID, firebase, and android applications. The a priori algorithm determines the combination of the luggage on the smart bag, if any luggage is left behind, the android application notifies.