Davis (1989) proposed the TAM to focus in the reason the users accept or reject the information technology and how to improve the acceptance, offering, this way, a support to foresee and explain the acceptance. Davis (1989) conducted a survey in a group of 112 users at the Canada IBM and in 40 MBA students of Boston University. The validation of the TAM model was based in the acceptance of a software text editor (DAVIS, 1989; SÁ, 2006)