You could easily log in to any One Channel service on Chrome browser with an extension.
Step 1: Install One Channel extension on Chrome Browser
Install One Chanel extension from Chrome Web Store.
If you don't have the Chrome browser installed, you can install it from here.
Step 2: Launch the One Channel Extension
Step 3: Scan the QR with One Channel App on your mobile
Authorize the browser from your One Channel App, and then select which channel to log in to.