At String Funding, we use digital currency (or ERC-20 Tokens) as a rewards for backer's pledge.
ERC-20 Token is a type of digital currency based on Ethereum protocol, which can be transferred and stored outside the String Funding platform. A hardware wallet or software wallet which supports Ethereum protocol can store this type of token.
Tokens are given certain rights, such rights are the core value of the tokens.
For example, 100 ABC tokens can be used to redeem one piece of ABC product from its manufacturer, ABC Pty Ltd.