An Assistive Model for the Visually Impaired Integrating the Domains of IoT, Blockchain and Deep Learning[J] SYMMETRY-BASEL 2023(15) Jadon, Shruti Taluri, Saisamarth Birthi, Sakshi Mahesh, Sanjana Kumar, Sankalp Shashidhar, Sai Shruthi Honnavalli, Prasad B.