The humble SD card has been with us since 1999, and in that time capacity and speed have grown dramatically. We've also had cards with built-in Wi-Fi, but externally the format has remained pretty-much unchanged: one or two rows of electrical contacts, set into a plastic shell.
But not any more. With its Armor Gold SDXC card, Lexar has swapped the plastic for a stainless steel construction that's claimed to be 37x stronger than a conventional, plastic SD card.
