How to redact a bank card before sharing a copy
What to black out on a bank card (and what to keep) before you hand over a copy, plus a recommended watermark — done on-device, nothing uploaded.
Black out the middle digits of the card number, cVV / security code, expiry date on your bank card; keep the cardholder name and the last 4 digits visible. Add a "For [purpose] only" watermark and export a flattened PDF from your iPhone — nothing uploaded.
What a bank card reveals
A debit or credit card shows the long card number, expiry date, cardholder name, and (on the back) the CVV security code. Hotels and rental companies sometimes ask for a card copy to guarantee a booking — push back when you can.
The card number, expiry, and CVV together are all that is needed for fraudulent online purchases.
What to redact
- The middle digits of the card number (keep first 6 / last 4 at most) The full card number lets anyone charge the card.
- CVV / security code (back of card) Never share it — it is the proof-of-possession for online charges.
- Expiry date With the number it completes a usable card.
What to keep visible
- The cardholder name
- The last 4 digits, if the receiver needs to match the card on file
Redact your bank card in 4 steps
- Pick the photo. Open Cachera and choose the photo of your bank card with the system picker — only that photo is read, never your whole library.
- Black out the sensitive fields. Drag a black block over the the middle digits of the card number and cVV / security code. On export the pixels are destroyed — nothing is recoverable underneath.
- Add a purpose watermark. Stamp who the copy is for, e.g. "For [purpose] only", so it can't be reused elsewhere.
- Export and share. Lay it out on A4, export a PDF, and share it. Everything stays on your iPhone — nothing is uploaded.
FAQ
What should I black out on a bank card?
Hide the middle digits of the card number, cVV / security code, expiry date. Keep the cardholder name and the last 4 digits visible so the copy is still useful.
Is it safe to send a copy of my bank card?
Only a redacted one. The card number, expiry, and CVV together are all that is needed for fraudulent online purchases. Black out the sensitive fields, add a purpose watermark, and share a flattened copy so it can't be reused.
Can redacted areas be recovered from the file?
No. Cachera flattens the black blocks into the image on export — there is no layer beneath them, so the covered details cannot be recovered from the PDF.
Redact it now — on your iPhone, nothing uploaded
Cachera blacks out the pixels for good, stamps a purpose watermark, and exports a print-ready PDF. Fully offline.