A case for More than One Card

Very nice fix!

Just a note for those wondering: The slider is not part of the electronics in the card. It does not turn anything on or off, and has no electrical function. There's a mechanical method in card slots that detect the position of the slider and determine whether it's locked or not.

Remember the tabs on the old VCR tapes you could break off if you wanted to prevent recording on the tape? Same principle! So by filling the slot, I am simply telling the card reader/slot that the card is available for writing. You can do the same thing with a small piece of clear tape (make sure you don't cover up the contacts on the other side!!!), but the tape may be pushed by the mechanism and not be 'detected' by it. Plus, the adhesive might get all mushy and gooey over time. But tape might just be the trick if it's a quick field repair.

Also, there's a slight groove along the edge of the card on the contact side that needs to be maintained. Otherwise the card may get stuck.
 

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