Yen and Euros have quite a large supply in circulation.

What matters most are how well is the currency distributed among others.
What you can buy or sell with it, and if it will be honored as payment.

For IOTA, I know that the currency will only be as good as the partnerships that they acquire to get manufacturers to use IOTA as payment between machines.

There are millions of machines being used everyday (IOT Devices, Amazon Alexa, Google Mini, Smartphones, Tablets, Refrigerators, Lights, ETC) that can benefit from this method of payment between services.

If your refrigerator comes with A Built-In Repair Insurance in the form of IOTA, The Refridgerator can pay for its own repair service, or reorder food from instacart/amazon key without you being involved.


Your Self Driving Car, can pay the dealership mechanic for any maintenance issues, Pick up more fuel/Recharge and park itself in your garage, while you nap.

Instead of fumbling around for quarters at parking meters and at toll lines, you zip right through because your car makes the payments.

Digital currency can enable alot of interesting scenarios, and you will want to be holding alot of it, before it comes.