[1]
V. Brindha Devi, S. Sindhuja, S. Shanthini, and M. Hemalatha, “A virtual keyboard security system for automated teller machine”,
IJET
, vol. 7, no. 2.33, pp. 59–63, Jun. 2018,
doi: 10.14419/ijet.v7i2.33.13855.