REQUIRED FIELDS IN FORMS: BEST DESIGN PRACTICES

Summary from the TLDR Design newsletter

Form design should minimize the number of required fields by collecting only essential data, as high-friction fields like phone numbers can trigger abandonment due to privacy concerns. Use asterisks to mark required fields, or state "all fields required" when everything is mandatory to reduce visual clutter. Success depends on balancing user motivation against friction: users complete forms when perceived value exceeds the combined cost of effort and privacy risk.