“…Many researchers continue to modify TAM. They add new variables in the TAM model such as gender (Szajna, 1996), prior experience (Gefen & Straub, 1997), subjective norms (Taylor & Todd, 1995a), short-term and long-term usefulness (Taylor & Todd, 1995b), belief before and after technology adoption (Chau, 1996) Since 2000, several researchers integrating new construct into the TAM model such as social influence and cognitive instrumental process (Karahanna et al, 1999Merikivi et al, 2012) change and perception formation (Venkatesh & Davis, 2000) , compatibility (Venkatesh, 2000), risk and trust (Chau & Hu, 2002) , object-based belief and attitudes (Pavlou P.A., 2003), national culture (Wixom & Todd, 2005) , adoption constraints (Srite & Karahanna, 2006), personality (Yarbrough & Smith, 2007), motivation (Ali et al, 2016;Chan-Olmsted & Shay, 2016;Devaraj et al, 2008), emotion (Fosso Wamba et al, 2017;Kim, 2012;Malhotra et al, 2008), engagement and user satisfaction (Lee et al, 2012;Sträub, 2009), social cognitive (Lim et al, 2013), the user's critical mass (Khang et al, 2014), technological capabilities and reliability (Lee et al, 2013), religious experience (Rauniar et al, 2014), technology and social access (Shuai, 2016), and privacy (Chang et al, 2016).…”