On 30/01/2019 16:33, Stefan Claas wrote: > Maybe an additional layer of household aluminium foil should work fine.
The sender could use their hat for that ;-P (SCNR) > Maybe one needs to use a special font ... Oh, most definitely. In this day and age, I'd probably look at a two-dimensional barcode instead. Supposing I would even consider sending OpenPGP data on paper :-). Other than key backups, where I'd opt for the program paperkey rather than barcodes. HTH, Peter. -- I use the GNU Privacy Guard (GnuPG) in combination with Enigmail. You can send me encrypted mail if you want some privacy. My key is available at <http://digitalbrains.com/2012/openpgp-key-peter>
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