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What I did several years ago is coordinate pads between phones by hand. A pretty-dense QR code can pass something like 1400 bytes. Two people who see each other
by ttyprintk 5y ago
What I did several years ago is coordinate pads between phones by hand. A pretty-dense QR code can pass something like 1400 bytes. Two people who see each other regularly could do this. Long-distance arrangements take a bit more thought.