3 ms·

If the user is 17.8 years old you need the month. If the user is 17.95 years old, you need the day.

• Sephr 8y ago
  You don't need anything, just the user's affirmative confirmation in response to the prompt, "Are you 18 or older?"
  • zuppy 8y ago
    and what happens after 6 months, or a year? you keep nagging the user if it's 18 or not?
    • Sephr 8y ago
      People don't age backwards, so the question doesn't need to be asked again.