For the past decade, 3D printing (3DP) has become popular due to availability of low-cost 3D printers such as RepRap and Fab@Home; and better software, which offers a broad range of manufacturing platform that enables users to create customizable products. 3DP offers everybody with the power to convert a digital design into a three dimensional physical object. While the application of 3DP in developing countries is still at an early stage, the technology application promises vast solutions to existing problems. This paper presents a critical review of the current state of art of 3DP with a particular focus on developing countries. Moreover, it discusses the challenges, opportunities and future insights of 3DP in developing countries. This paper will serve as a basis for discussion and further research on this area.Comment: 4 pages, International Journal of Computer Applications Volume 104-Number 11, 201
Security is a leading factor for establishing and maintaining customer trust in mobile money services (MMSs). MMSs in Tanzania rely on the use of Personal Identification Number (PIN) as an authentication method. However, a PIN can be easily guessed, forged or misused. This paper explores security challenges in MMSs and weaknesses associated with the current Mobile Money Authentication (MMA) method. Further, the study proposes the use of two-factor authentication model as an alternative method. The proposed model combines the current approach of using PIN and adds another layer of security that uses fingerprint recognition technology. Evaluation of the proposed model shows that it mitigates security vulnerabilities that exist in the current MMA method.
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