You could easily log in to any One Channel service on Chrome browser with an extension.
You need to have the One Channel App set up on your phone first. You could refer to instructions for iOS or Android.
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.