You can replace a lost camera, but not the photos saved on its memory card. So you should give the potential finder of your photo hardware some way to get in touch with you — and if you can put that information on the card itself, you also guard against the possibility of leaving the thing on a desk by mistake. Back in December, longtime reader (and alumnus) Rakesh Agrawal suggested a more durable solution than taping a piece of paper to the outside of the camera: Save an image with your name, e-mail address and phone number on the card.

To do this, however, you’ll need to produce a graphic — using a basic app like Windows’ Paint or Mac OS X’s Preview — that the camera will recognize as just another photo to display on its screen. And that may take a few tries. My nearly four-year-old Canon point-and-shoot would only accept a JPEG file at the same size as its default resolution (2599 by 1944 pixels), in the same “DCIM” directory on the card as other photos and with a filename that matched its default “img_1234.jpg” structure. (As a fallback option, you could take a picture of a printout of the image you created.)

(About the “PostPoints tip” title: I archive each tip-of-the-week e-mail we send to PostPoints members under this blog’s “Tips” category. Today’s item went out on March 29. Not long after, I got a terrific reply from a reader who wrote that he adopted this habit a while back. As in, 40 years ago, when he began devoting the first photo in each roll of film to a picture of his card, just in case the film was misplaced. But, he added, “since I had prepared, it never happened.”)


* Sunday’s column gave Amazon’s Cloud Player a listen and expanded on an earlier blog post on this Web-based music option. If you have another two minutes to spare on this topic, check out the latest installment of our weekly video series, which shows Cloud Player in action on a few devices and features a track that may be familiar if you’re a fan of roots rock or of former Weekend-section writers.

* Help File dealt with a reader’s concern over a Facebook profile created for her, without her consent, which she would like to see go away. Yes, there are people not on Facebook who don’t feel compelled to join that social network anytime soon.