ATM Interfaces, Multiples of 20, and Too Many Buttons #wtfUX

According to this ATM machine, I must specify a withdrawal amount in increments of $20.

Even so, I am allowed to press the the 1, 3, 5, 7, and 9 keys (for whatever reason) and must specify that I want "00" cents despite the inability of any ATM machine to dispense coins.

ATM UX fail

Machines that display presets of $20, $40, $60, $80, or $100 offer a single tap to achieve an effectively error-proof task. This machine requires unnecessary cognitive load and a gauntlet of error possibilities. Not to mention the Over-Zealous Capitalization In The Instruction Line.

Keep these coming. Send them to us via Twitter or Facebook using the hastag #wtfUX or email them to: wtfux@uxmag.com with "#wtfUX" in the subject line. Include as much context as you can, so we get a full understanding of what the f%*k went wrong. Image of $20 bills courtesy Shutterstock.

About the Author(s)

Daniel Brown

Daniel has spent the past 20 years in software companies both large and small. From web design and development for a “boutique” web design firm to Evangelism for Adobe Systems, to helping budding startup companies get a foothold in the market, he’s worn a variety of “hats". Daniel has spoken at a variety of events worldwide including the Sundance Film Festival, Anderson Ranch Arts Center, Santa Fe Digital Workshops, and the Pacific Imaging Center in Hawaii on the topics of web design, digital imaging, photography, and user experience. Daniel currently serves as the head of the interface and user experience department at a small medical software company in Providence, Rhode Island.