ANALISIS TINGKAT KENYAMANAN PENGGUNAAN CAPTCHA DENGAN MENGGUNAKAN APLIKASI BERBASIS WEB

• Main Authors: , Ummu Radiyah, , Teguh Bharata Adji, S.T., M.T., M.Eng., Ph.D
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/120495/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=60526
• Institution: Universitas Gadjah Mada

Nowadays, web-based computer system security is a major concern because it is vulnerable to computer crime. One form of attack carried out by using robot programs (bots) who disguised as a human. Based on these problems, testing methods that often called reverse Turing test are required to distinguish the validation process between robot and human. Completely Automated Public Turing Test to Tell Computers and Humans Apart (captcha) is one method of reverse Turing test which is normally used on various websites as a method to distinguish between humans and machines. This method is used as a security system on a website but sometimes reduce the level of comfort for the users of the website. In addition, there are some difficulties that are often encountered by users like image distortion, captcha in foreign languages, and various captcha types such as text captcha, image captcha, and sound captcha. This study aims to determine the level of user experience with each type of captcha and to produce a recommended types of captcha that can be used in the construction and development of a website which is in accordance with the level of user comfort. Observational studies was performed by observing different types of captcha, captcha generation methods, and some aspects of usability captcha using an online questionnaire. The results of the observations and the questionnaire provides an overview of the success of the user interaction with each type of captcha. Results of data analysis using SPSS One-Way ANOVA shows that the type of captcha accordance with the level of user comfort is text captcha.