EtherLi is the first web-based ETC wallet in the world. The wallet is protected by multi-signature protocol with 2-factor authentication for transactions. EtherLi has 3 accounts or keys, 2 of which are used for money sending.
The web client stands for a single account running and signing logic locally. At the same time, the second account which is required to apply the second signature is run by EtherLi service and acts as a co-signer that will confirm transactions given the user's authorization.
If EtherLi is down or unable to sign, users will have 2 of 3 keys to relocate assets (it is necessary to write down these keys and keep in safe place).