You can cover a part of your bank card with a stripe of paper, leaving only the first 6 and last 4 digits visible. The rest of the card’s digits should remain uncovered. Take a photo of the card ensuring that all corners and edges are clearly seen.
The same can be done with the card’s backside. Use two paper stripes to hide a mirror image of the card number (if any) and cover the CVC2/CVV2 code. Take a photo with all corners and edges clearly seen.
There is another way to do it. You can take a photo of your bank card without covering it with stripes. Then open the photo of the card with any graphical editor and cover up the sensitive data. For your convenience, we have made an example of such a photo: