Identity data, encrypted and minimised
- CNIC numbers are encrypted with AES-256-GCM before they are stored. Staff normally see only the last four digits. Revealing the full number is a separate action, and it is logged.
- ID photos are kept in private storage. Owner photos stay while the account is active, so a fake owner can be identified if a fraud is reported. Student photos are deleted 30 days after review.
- Duplicate accounts are detected with a keyed hash, so the check never needs your number in readable form.