Abikoye, O. C, G. K Afolabi, and T. O Aro. “BIOMETRIC BASED POINT- OF- SALE AUTHENTICATION SYSTEM”. International Journal of Software Engineering and Computer Systems 5, no. 1 (February 1, 2019): 36–51. Accessed October 7, 2024. https://journal.ump.edu.my/ijsecs/article/view/2720.