This thesis explored how transparency-focused UX design features—specifically pop-

up messages—impact users' trust and awareness of data collection on e-commerce

websites. The study used a quantitative research approach, using comparative usability

testing and a post-experiment survey with 30 participants. Two Figma prototypes were

developed: one with transparency-enhancing pop-up messages (Prototype B), and one

without (Prototype A). Participants interacted with both and then filled out a survey

comparing their experiences. Results from Chi-Square and Mann-Whitney U tests

showed statistically significant preferences for the transparent design (Prototype B),

with higher levels of perceived trust and awareness reported. The findings highlight the

importance of integrating transparency into UX design to support user trust and

responsible data practices in e-commerce, as well as balancing transparency with

interface simplicity.

Keywords: Transparency, UX Design, Quantitative Research, Usability Testing, Data

Privacy, User Trust, E-commerce