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Are you aware that if you go premium ($10 per year) you get TOTP generator accessible from each record, AND, especially valuable you can set up a "dead man switch" or whatever they call it,

which enable you to automatically hand over your BW master key (with keys to all your assets) under certain conditions which you set in advance. .

And that could be anonymous. Capital Gains tax comes to mind! And, once you've set this up, you don't have to subscribe every year, unless you want to change the conditions