Memory card not deteced by mobile or computer.

I had a similar issue with a memory card that my wife and I used during our trip to Africa.  During one of our safari drives, the card stopped working and was no longer recognized by the camera or computer.  As such, there wasn’t really any way to use the widely available recover software.  Stupidly, we hadn’t backed-up our photos from the first three days of our trip so we thought our photos were lost.  Luckily, I found a guy in Germany who uses a special technique to recover the files (http://recoverfab.com).  You can watch a youtube video on the technique, if interested.  I highly recommend the service as it was fast and effective.