Mobile First by Luke Wroblewski

Author:Luke Wroblewski [Wroblewski, Luke]
Language: eng
Format: epub
Tags: COMPUTERS / Web / Site Design
ISBN: 9781937557034
Publisher: A Book Apart
Published: 2011-10-13T16:00:00+00:00

Fig 5.3: Microsoft’s Windows Phone 7 Touch target guidelines.

Microsoft’s guidelines also do a nice job of specifying when touch targets may need to be bigger than 9mm: if “the UI element is frequently touched; the result of a touch error is severe or really frustrating; the UI element is located toward the edge of the screen or difficult to hit; or when the UI element is part of a sequential task—like using the dial pad,” (http://bkaprt.com/mf/44; PDF).

When it comes to what we touch on mobile, bigger is generally better. Ensuring actions are appropriately sized and spaced apart can avoid serious usability issues as well—not just accidental slips of the finger. Take a close look at the mobile login screen of Q&A site Quora (fig 5.4). Notice any potential problems?

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