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@@ -40,7 +40,7 @@ a QR code with the key information of the invoice in JSON format.
 This is the typical content of a QR code following the UsingQR
 specification (based on a real world example, some numbers replaced to
 get a more bogus entry).  I've reformatted the JSON to make it easier
-to read.  Normally this is all on one long line:
+to read.  Normally this is all on one long line:</p>
 
 <p><img src="http://people.skolelinux.org/pere/blog/images/2016-03-19-qr-invoice.png" align="right"><pre>
 {
@@ -86,7 +86,7 @@ risk, but if this happen there is some legal defense in the fact that
 the people behind the format claimed it was safe to do so.  At least
 with patents, there is always
 <a href="http://www.paperspecs.com/paper-news/beware-the-qr-code-patent-trap/">a
-chance of getting sued...</a>
+chance of getting sued...</a></p>
 
 <p>I also asked if they planned to maintain the format in an
 independent standard organization to give others more confidence that
@@ -97,6 +97,27 @@ evaluate the way forward if the format proved to be popular.  I hope
 they conclude that using an open standard organisation like
 <a href="http://www.ietf.org/">IETF</a> is the correct place to
 maintain such specification.</p>
+
+<p><strong>Update 2016-03-20</strong>: Via Twitter I became aware of
+<a href="https://news.ycombinator.com/item?id=11319492">some comments
+about this blog post</a> that had several useful links and references to
+similar systems.  In the Czech republic, the Czech Banking Association
+standard #26, with short name SPAYD, uses QR codes with payment
+information.  More information is available from the Wikipedia page on
+<a href="https://en.wikipedia.org/wiki/Short_Payment_Descriptor">Short
+Payment Descriptor</a>.  And in Germany, there is a system named
+<a href="http://www.bezahlcode.de/">BezahlCode</a>,
+(<a href="http://www.bezahlcode.de/wp-content/uploads/BezahlCode_TechDok.pdf">specification
+v1.8 2013-12-05 available as PDF</a>), which uses QR codes with
+URL-like formatting using "bank:" as the URI schema/protocol to
+provide the payment information.  There is also the
+<a href="http://www.ferd-net.de/front_content.php?idcat=231">ZUGFeRD</a>
+file format that perhaps could be transfered using QR codes, but I am
+not sure if it is done already.  Last, in Bolivia there are reports
+that tax information since november 2014 need to be printed in QR
+format on invoices.  I have not been able to track down a
+specification for this format, because of my limited language skill
+sets.</p>
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