Sitra

Sitra とは？

The problem with your card is that everyone has it. Every subscription, trial, and one-off purchase sits on the same 16 digits, stored on servers you'll never see. When one gets breached, you're the one who notices the strange charge, calls the bank, and updates it everywhere. Sitra starts with one idea: your card doesn't have to be permanent. Not a bank. Not a budgeting app. Just a card built to be thrown away. Disposable by default. Under your control, always.