The mobile telecommunication industry is undergoing tremendous revolution so much that even an illiterate handler of mobile phone is tutored to say "hello" upon access to it. The use of the mobile phone has become so ubiquitous that a mere three-year-old infant can lift up a GSM handset and speak into it. In some instances, the mobile phone has become a play toy that is at the reach of every member of the family. The mobile phone has made inroad into every segment of the Nigerian society including the rural areas. The mobile phone revolution has brought a lot of changes and made lives a lot more comfortable and stress free by bringing people closer even when they are separated by distance. The mobile phone may have also reduced the frequency of travels by many people and by implication reduced danger and hazards associated with travels. It is reported that Nigeria has over 80 million mobile phone subscribers to the four dominant mobile phone service providers in Nigeria. It is a well-known fact that since the late 90s several countries of the world especially in Africa, Asia and Latin America have witnessed a phenomenal growth in this telecommunications sector of the economy of these nations, particular reference is made of the use of mobile cellular phones. As a matter of fact, organizations have become increasingly dependent on technologically based information to support operational, tactical and strategic business activities, thereby making information technology intrinsic in today business enterprise (Okpara and Mohammed, 2012). Telecommunications revolution has transformed Nigerian society from its in diverse ways, to the illiterate, it makes communication easier and faster than it used to before the revolution. Similarly, it has become a tool for the young ones not only as a medium for communications but a play mate. As it has become an instrument for playing games, listening to music, chats among peers. It has become widely known that this revolution, which include the use of the

Nigerian payment systems are cash-driven, and it is the main mode of payments for several transactions. However, the Point of Sales (POS) which is meant to encourage cashless economy as against the cash-centered operations is challenged with issue of trust and security. This study examined the consumer trust and adoption of POS of selected business organizations in Lagos state, Nigeria.The study adopted a cross-sectional survey research design. The population of the study consisted of individual SMEs who are users of POS in the selected sectors and business organizations in Lagos State with population figure of 11,663 and sample size of 2,059. The respondents were randomly sampled from the selected organizations where the data were collected. A validated questionnaire was used. A total of 2,059 copies of the questionnaire were administered, with a response rate of 77.1%. The Cronbach's alpha coefficients for the constructs are 0.727 for adoption of POS and 0.810 for customer trust and 0.758 for POS security. The data were analysed using descriptive and inferential (Pearson Product Moment correlation) statistics.The findings revealed that there was a significant relationship between customer trust and Adoption of POS (r=0.373; p<0.01) and POS security and Adoption of POS (r=0.437; p<0.01).The study concluded that customer trust had significant and positive relationship with adoption of POS of selected business organizations who are SMEs in Lagos State, Nigeria. The study thus recommended that stakeholders should ensure that security and trust are two important considerations in order to enhance the adoption of POS of selected business organizations in Lagos state, Nigeria.