Initiative Q uses its own currency, the Q, and to get people to start using the system once it's ready they are allocating Qs for free to people that sign up now (the amount drops as more people join - so better to join early). Signing up is free and they only ask for your name and an email address, you can even put one you dont use regularly but you can check. There's nothing to lose but if this payment system becomes a world leading payment method your Qs can be worth a lot. If you missed getting bitcoin seven years ago, you wouldn't want to miss this.
Here is my invite link: https://initiativeq.com/invite/SmrprqQhX
This link will stop working once I’m out of invites, or by 24/05/20. Let me know after you registered, because I need to verify you on my end.