First, a few details
We ask for the minimum: a first name and a phone number. No surname, no school, no date of birth.
Used to write the report to you. A nickname is fine.
How you get back to the report, and where the M-Pesa prompt is sent once the report is written. The last four digits also guard your report link, so a forwarded link on its own shows nothing.
Only used to send your report link and your receipt.