To come back to the demo, a lot of you were talking about. They said on Telegram that they are already showing the demo at HK Fintech, CCIC, Bitcoin.com etc but won't release it before the presale. But they already shared
2 screenshots from the demo.
I read it in this way, the user have 6 cappuccino tokens and he can redeem his cappuccino by showing the barcode to the merchant. As far as I understood the GAT system, if I have 1 cappuccino token but 0 caffè americano tokens and I want the latter so badly I can exchange cappuccino to americano in the GAT exchange (if 1 cappuccino = 1 americano) or sell my cappuccino token for GAT tokens