Google PRINCIPLES OF MOBILE SITE DESIGN: DELIGHT USERS AND DRIVE CONVERSIONS - Manual (Page 25)

Whether it’s making a purchase, getting a quote
or joining an email list, your user’s conversion
experience should be as seamless as possible.
This section explores how to reduce friction
at the finish line through streamlined form entry.
14 STREAMLINE INFORMATION ENTRY
15 CHOOSE THE SIMPLEST INPUT
METHOD FOR EACH TASK
16 PROVIDE A VISUAL CALENDAR
WHEN SELECTING DATES
17 MINIMIZE FORM ERRORS WITH
LABELING AND REAL-TIME VALIDATION
18 DESIGN EFFICIENT FORMS
25
FORM ENTRY
PRINCIPLES