Andreas' wallet supports this, but don't do it. Payment requests can get
larger in future even without signing. Exploding the capacity of a QR code
is very easy.
Instead, take a look at the Bluetooth/NFC discussion happening in a
different thread.
On Tue, Feb 24, 2015 at 4:58 PM, Oleg Andreev <olega...@gmail.com> wrote:
> Hi,
>
> I wonder if there is a standard way to put Payment Request data into
> bitcoin: URI or directly into QR code. The goal is to allow device to
> generate a multi-output payment request on its own, without relying on the
> server and x509 certificates. When scanned via QR code from, say, POS, it's
> pretty secure, so no additional authentication needed.
>
> I'd like something like this:
>
> bitcoin:?r=data://<base64url-encoded-payment-request>
>
> If there's no standard for that, would it be a good idea to extend BIP72
> this way?
>
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