Perhaps just use QR codes? Easily scanned and imported by a digital device. Message size is limited, but probably enough. If not, you can maybe use multiple QR codes. This reply, encrypted to you, is contained in the linked QR below:
https://imgur.com/a/JoPjgGH On 10/5/20 10:37 AM, Stefan Claas wrote: > Hi all, > > while I did some JAB-Code experiments with MMS, to send GnuPG messages with a > dumb > phone, I came up now with a new idea. :-) > > For that I need five people who are willing to share with me their postal > address. > You can send me your address GnuPG encrypted. I will not store your address > on my > computer and will delete your email, once I received it. > > My new idea is to send encrypted postcards or letters, with an NFC tag > attached, > containing a GnuPG clearsigned test message. I like to see if the postcards > will > arrive in proper condition, so that the NFC tags are still readable. > > What you will get from me: > > A postcard with Berlin photos on, an address sticker from me, containing the > MacPGP > 2.6.2 icon with the little secret agent and a valid international postal > stamp with > a photo from me on. If you are a stamp/postcard collector, you will agree > that this > is IMHO a collectors item. :-) > > Why I came up with this idea? Well I thought of a way to send private content > digitally, > without Internet usage, so that 3rd parties outside the EU have it difficult > to intercept > such messages, in order to protect EU businesses and to show the young > generation that > local postal services should be supported, in favor of a globally surveilled > Internet. > > A standard NFC tag can't store that much data, but there are different types > available > and one can use also modern encryption software which gives you more > encrypted payload. > > Once I received your address (first come first serve) I will prepare the > postcards > (hopefully tomorrow) and send them to you. It would be nice if participants > would share > their experience, so that other GnuPG users could learn from it. > > Please note, NFC tags can be used multiple times, so that for example Alice > and Bob use > only on NFC tag with their letters, they exchange and those NFC tags can also > be destroyed > with special* hardware devices or bought in a form that they get destroyed if > someone tries > to take them off, from the carrier medium. > > *https://nfckill.com/ > > The consumer hardware device I purchased: > > https://www.nfc-tag-shop.de/en/nfc-hardware/147/acr1252u-nfc-forum-certified-reader/writer > > Software one can use on their Desktop: > > https://www.wakdev.com/en/apps/nfc-tools-pc-mac.html > > and for people, living in Germany, regarding postal stamps with photos: > > <https://shop.deutschepost.de/individuell?s_kwcid=AL!11701!3!434303734945!b!!g!!www%20deutsche%20post%20de%20individuell> > > Regards > Stefan > > NaClbox: cc5c5f846c661343745772156a7751a5eb34d3e83d84b7d6884e507e105fd675 > The computer helps us to solve problems, we did not have without him. -- -Ryan McGinnis http://bigstormpicture.com PGP Fingerprint: 5C73 8727 EE58 786A 777C 4F1D B5AA 3FA3 486E D7AD
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