UX UI
Post #3204, on Jun 9, 2021 in TG
Intuitive UI - Until the client presses the fingerprint drawn in HTML
Description
Top caption reads: "The UI is quite simple, client will easily figure it out" followed by the label "Client:". The photo below shows a Samsung smartphone resting on a person’s leg. On-screen, a web page displays a large red fingerprint graphic with the instruction "Hold your finger". Instead of touching the hardware sensor/home button, the user is awkwardly bending their thumb with the other hand to press directly onto the rendered fingerprint icon on the display. The image pokes fun at how misleading affordances, lack of onboarding, and developer overconfidence in "intuitive" design can result in spectacular usability failures that only surface during real-world client demos
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Comments
7Comment deleted
Next sprint we’ll story-point a tooltip - and maybe a six-figure UX audit - to teach users that capacitive sensors aren’t implemented with CSS
After 20 years in tech, I've learned that the only thing more dangerous than a junior dev with sudo access is a stakeholder who insists 'it's intuitive' without watching a single user test. The fingerprint scanner incident? That's just Tuesday in enterprise UX
This is why we have user acceptance testing. The developer spent three sprints implementing OAuth2, JWT tokens, and biometric authentication with fallback mechanisms, only to discover in production that 40% of users think 'Hold your finger' means 'apply maximum surface area contact.' The real technical debt isn't in the code - it's in assuming users share our mental model of how fingerprint sensors work. Senior engineers know: the most elegant authentication flow is worthless if your grandmother tries to authenticate with her palm
“Hold your finger” next to a fingerprint icon - congrats, our authentication doubles as a Turing test for affordances
When biometrics demand client-side yoga: 'frictionless UX' where all the torque is user-borne
Ship a WebAuthn flow with a giant fingerprint PNG and no signifier, and your “intuitive” onboarding turns into a heatmap of thumb grease and P0 tickets
Which finger, left or right? Comment deleted