It's the middle of the week, 10 Things in Techies. I'm Diamond Naga Siu, and for the first decade or so that I worked, I was always paid in cash. I didn't put much of it into a bank, because I didn't really understand how it worked.

So I hid it in different places, keeping a mental tally of my cash stash.

I'd be pretty upset if I mistaked one of my decoy reserves for a pot of proverbial gold. But that's almost exactly what happened to JPMorgan Chase.

The financial services company thought it had $1.3 million worth of nickel stored in a warehouse. But the London Metal Exchange gave the banking giant a costly wake up call: its horde of bags only contained stones.

Before I go check my remaining stash to make sure it's all real, let's dive into today's tech.