台灣的線上活動非常普遍，網路線上購物尤是流行，然而近幾年人們意識到線上購物的安全性和隱私權之重要性。因此，本研究將線上購物入口網站可信度納入研究架構作深入探討，研究消費者對於入口網站的看法。
此外，本研究目的旨在研究線上購物入口網站可信度對於回購意願的影響程度，採用TAM 2 模型當作理論基礎，將顧客滿意度設定為中介變數，觀察其對認知易用性、認知有用性、線上購物入口網站可信度、回購意願關聯中帶來的影響結果。

Online activities are common in Taiwan; especially online shopping. However, in these years, there are more and more people have awareness on security and privacy toward online shopping. Therefore, credibility of the online transaction portal is targeted to put into research framework to have further investigation to see how online users perceive the portal/website. What’s more, this research aims to study the influence of credibility of online transaction portal on repurchase intention. On the other hand, take customer satisfaction as the mediator in this study in order to see how it mediates the association among perceived ease of use, perceived usefulness, and credibility of portal and repurchase intention. By adopting TAM 2 into the research framework, this research ends with a number of implications.

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