ZCash

The German bank robber sticks a gun in the bank teller's face and says, "Hand me zcash..." The bank teller then takes out a computer, logs in, and then has to digitally "wire" the robber the zcash if he still expects to get paid for his, um, efforts.

ZCash is yet another cryptocurrency, in the vein of Bitcoin and others. It's a virtual currency with all kinds of security protection wrapped around it. You get zidea.