Interfaces handling money.
WHAT USERS NEED TO SEE
The exact amount, with currency Who is being paid What fees apply The resulting balance Confirmation before committing
WHAT TO DISPLAY PROMINENTLY
The recipient name, returned by verification.
WHY
It is the last opportunity to catch an error.
WHAT TO AVOID
Amounts without currency Ambiguous formatting Fees revealed after commitment Actions that cannot be cancelled with no warning
WHAT TO REQUIRE FOR IRREVERSIBLE ACTIONS
Explicit confirmation, showing all details.
WHAT TO NEVER DO
Pre-select the largest amount Make the confirming action easier than cancelling
WHAT TO SHOW DURING PROCESSING
Clear progress, and that closing the page is unsafe.
WHAT TO SHOW AFTER
An unambiguous result A reference What happens next, if anything
WHAT TO PROVIDE FOR FAILURES
A plain explanation What the customer's money is doing now What they should do
WHY THAT SECOND POINT
The first question after a failure is always where the money is.
WHAT TO TEST
On a modest phone, on poor connectivity, with a real user.
