“…Customershavetostandinaqueueforlongtimetopaythebillsatthecountersectionthroughbarcode scanningsystemwhichatmanyoccasionsbecomecumbersomeandfrustratingforthecustomers (Mane et al, 2016). The given system explains the implementation of smart shopping cart and billingsystemusingbarcodescanner (Prasiddhi&Dhanashri,2017).Thegivensystemincorporates automaticbillingsystemwiththehelpofRFIDandZigBee (Ezhilazhaganetal.,2016).Inpresent shoppingsystemtherearemanydifficulties.Thissystemproposesanautomaticproductdetection andsmartbillingwiththehelpofWi-Fitechnology.Thepaymentisprocessedbymobilebanking orcashpaymentandthecartsystemwillverifytheproductandpaymentprocesswillbecompleted (Dahiya&Neha,2016).Thissystemisdesignedforhomesecuritybasedonwirelessnetworkusing Wi-FiandIOT.Itcandetectthetheft,fire,leakageofgasorsmokeandsendsanauto-generatedemail toalerttheowner(Joshietal.,2015).Inthisgivensystem,itwillmeasureTDSofanROsystem usingtdsmeteranddatawillbesentusingesp8266Wi-Fimoduleintheformofmessageswhich isprogrammedandcontrolledbyArduinoUnomicrocontroller (Ahmed&Hassan,2014;Anusha, 2016).Inpresentsystem,thechildprotectionisbasedonutilizationofRFIDinhealth-caretoavoid swappingorlosingsightofchildren.Also,RFIDsystemisusedforschoolchildrentrackingsystem usingGPS.Therearecertaindisadvantagesintheexistingbarcode-shoppingsystem.Inexisting systemlineofsightisrequiredwhilescanningeveryproductandalsomultipleproductscannotbe detectedinbarcodescanning.Iftheproductsaredirtyandgreasedthenitcan'tbereadproperly. Also,itisnotpossibletowrite,modifyandupdatedatainbarcodescanningsystemwhileinRFID systemwecanmodifythedetailsinRFIDtagswithouttamperingit.…”