TY - JOUR TI - Blockchain-enabled virtual smart card authentication for IoT systems and applications AU - ALDARWISH, A.J.Y. AU - PATEL, K. AU - YASEEN, A.A. JO - Sigma Journal of Engineering and Natural Sciences PY - 2026 VL - 44 SP - 3195 EP - 3208 DO - 10.14744/sigma.2026.2151 ER -