Anybody who has prized the lid off from their mobile phone recently
cannot have failed to notice the tinplate-like screens shielding the RF
stages, in a similar manner to the lids on TV tuners.

As a ferrous screen is better than just aluminium for magnetic shielding,
I wonder if any have pressed into service the tinplate from cans of
baked beans to provide a similar function?

If so, what was the success in fabricating the springy fingers to ensure
a good seal?