Sep23
Posted at 9:08 am by Ken. Filed under Interface design, User Experience.
The act of buying a BART ticket is, well, difficult. I will save that for another longer, more studied entry. But I need to comment on my experience from the other day of getting a change for one dollar so that I could get on MUNI.
The default screen for buying tickets has green type in the bottom right corner that says: “Press “H” to get change”, so I put my dollar bill in the slot. Then, without reading the screen again, pressed the “H” button. And my dollar gets spit out. I’m very confused, so I read the screen again, to determine that I had pushed the correct button, then put my money again, and went to push the “H” button. But this time I read the screen. Now in red type it said, “To cancel press this button” pointing to the “H” button. So the same button I used to get change, now becomes the cancel button. How confusing. Changing the action of a button in the middle of a transaction (and on top of that, making it cancel out the process) is not a consistent interaction model. There are at least six other buttons to choose from that could become the cancel button. Why not dedicate one of them to always being the cancel button?