DESIGN AND USABILITY EVALUATION OF A VOICE-ASSISTED TEXT-FREE CUSTOMER MANAGEMENT SYSTEM FOR LOW-LITERACY SHOPKEEPERS. Kashf J. Multidiscip. Res. [Internet]. 2025 Nov. 20 [cited 2026 Jun. 22];2(11):68-82. Available from: https://kjmr.com.pk/kjmr/article/view/756