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Trust is at the core of any payment method and it plays a crucial role in the adoption of new payment systems. Individuals need to trust in one another in order to validate any monetary system developed. With the evolution of the payment methods, shifting from paper-based to electronic-based, build consumers' trust has become a vital element for the success of businesses in the payment systems. In this sense, the aim of this paper is to provide a scoping review of the relevant literature conducted between 2013 and 2017 on mobile payment systems (MPS) sector and point out which factors might affect trust and, in turn, might have influence on MPS adoption by users according to academics. In order to organise the recent studies for further discussion, this paper proposes to divide the studies into five distinct categories: country (where the study took place), method employed (surveys, interviews etc), number of respondents, focus of the research (consumers, merchants or users in general) and model (framework) used. The findings of 76 studies (2013-2017) pointed out that there are 111 different factors that have impact on mobile payment systems, according to the authors. In addition, the findings have indicated that China is the country with more studies conducted on the adoption of MPS, followed by Spain. It is worth mentioning that, in many countries the number of studies seems underrepresented and in others, there are no data published yet.
Keywords: Trust, Mobile payments, MPS, Adoption, Influencing factors.
Introduction
For any payment method to become acceptable, people need to trust that the prevailing currency, or in other words, money, represents and is recognised by all parts involved. As 'money is an abstraction built on trust' (Chakravorti and Mazzotta 2013, p.3), people need to feel assured that the currency they possess is recognized by others and it holds the same value (Vigna and Casey 2015, p.15). In this context, cash represents one of the most tangible forms of money, due to the fact that society as a whole needs to trust that this paper-based payment method can be exchanged for goods and services. However, despite the great acceptance among users, this payment method has been gradually substituted by new means of payment.
With the evolution of the technology...