You can't use K'Ching without a current account. Luckily, you can open a current account with KBC Brussels in just a few clicks, and it's also free of charge for young people. Once you receive your bank card by post, you're ready to go.
You can only open an account for yourself once you turn 18. If you are under 18, your parents or legal guardians can open a current account for you online using their tablet or PC via KBC Brussels Touch, so you should ask them for help.
Once you receive your bank card through the post, you can get started with K'Ching.