• Vikas Singhal
• Shivani Dubey
• Ashish Kumar Singh
• Abhishek Awasthi
• Rishu Singh

In this study, the Blowfish approach is used to create a billing system for radio frequency identification (RFID). It will employ RFID in billing systems that are designed to quickly identify billing in order to save time and develop a new payment revolution processing. So it is anticipated that using such a system will lessen the congestion that frequently occurs in the billing queue. This is typically caused by how long barcode payment processes take. Data security from the user's device, such as electronic card RFID tags, is also necessary in addition to transaction time speed. The victim of billing card data theft will suffer. Since the blowfish approach is being used in this instance to protect or conceal user data, safeguarding user data can prevent tampering that would otherwise result in the creation of duplicate RFID tags. For compressing image and to choose best blowfish algorithm feature so that to reduce image without data lost blowfish method is used.

Cryptography, Security, Blowfish Algorithm, RFID Module, billing.

"BILLING SYSTEM BASED ON RFID USING BLOWFISH ALGORITHM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.n273-n283, May-2023, Available :http://www.jetir.org/papers/JETIR2305D41.pdf

"BILLING SYSTEM BASED ON RFID USING BLOWFISH ALGORITHM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppn273-n283, May-2023, Available at : http://www.jetir.org/papers/JETIR2305D41.pdf