So if I understand this scheme right, a standard 6 pack of cans are going to cost £1.20 more and I am going to have to collect them and store them separately to the other 4 separated rubbish categories I already have.
Then lug them all to a collection point to get the deposit back instead of placing them in my recycling that I already pay the council to collect every (other) week anyway.
Great, just great, how convenient.

It says in the docs:
"## Accessibility
For users with accessibility needs who cannot use hand gestures to complete the challenge, reCAPTCHA continues to provide visual and audio challenges, and develop more accessible and secure alternatives."
So it seems you can just do a different task if you don't want to do the hand thing anyway.
Edit: obligatory F google still of course.