On Tue, Oct 06, 2020 at 04:49:15PM +0200, Stefan Claas wrote:
Good question. QR codes needs for example a printer and stickers too, if
not printed directly on postcards. My new Epson printer, for example, does
not support feeding of postcards or other thick materials, only standard
paper and photo paper.
We are moving a bit far away from GnuPG issues, but ... ;-)
a) you'll neither need stickers nor postcards, just a standard sheet of
plain paper.
b) you can generate QR codes without using a smartphone (e.g. qrencode
on Linux systems) but easly on smartphones without NFC hardware too.
maybe we should ask ourselves why NFC tags were invented if QR-code would
be sufficient.
c) NFC capable smartphones still are less common than smartphones with
cameras to scan QR codes, so if you want to expand the set of possible
recipients and senders, you should think about the least common denominator
instead.
d) NFC tags have their uses, but weren't invented to replace or augment QR
codes. And besides being cheaper to produce, QR codes are much more
resilient.
Finally: using password protected NFC tags to carry encrypted content seems
a bit of overkill or over engineering too. But one could read a tag without
opening the letter that would be used to ship it, which obviously would be
a bit harder with QR codes ...
--jc
P.S. Last but not least, we could send QR codes via email! ;-0
--
Never underestimate the bandwidth of a station wagon full of tapes hurtling
down
the highway. -- Andrew S. Tanenbaum
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