I like to try and reduce the amount of disposable plastic I use, for several reasons. One thing that is unavoidable at the moment is bank cards, which have to be replaced every few years. I believe that one or two banks have used non-PVC based cards. Has looked into options for using a more sustainable material for the debit cards? I wonder if it's now possible to make them from recycled plastic or a plastic that biodegrades (say, after 10 years)?