Kamaruddin, Kamaruddin, et al. “Implementation of Braille-Mobile Device to Help Visually and Speech-Impaired Persons Communicate Based on the Blynk IoT”. Journal of Applied Informatics and Computing, vol. 9, no. 6, Dec. 2025, pp. 2957-64, doi:10.30871/jaic.v9i6.11072.