The answer is yes. Even if you plan to only work on a PC or a Mac, you will still need a mobile device to install and run the clickworker app on. You cannot access the clickworker workplace without it any longer, because you need the app to confirm your 2-factor authentications (2FA) with it.

But I do not have a mobile phone or a tablet and I am not able to get one! How do I log in now?

If you do not have a mobile phone or tablet, if you cannot get one, or if your phone/tablet is too old to install the app or is broken, you will no longer be able to log in to the clickworker workplace. We apologize for any inconvenience caused by this, but the 2-factor authentication is now mandatory for all Clickworkers, and it only works in combination with the clickworker app. There are no exceptions to this rule.