https://blog.opensourcecurrency.org/tags/qrcodes/ Recent content in Qrcodes on Open Source Currency Hugo en-us Sat, 24 Jan 2009 23:15:00 +0100 https://blog.opensourcecurrency.org/2009/01/24/qr-codes/ Sat, 24 Jan 2009 23:15:00 +0100 https://blog.opensourcecurrency.org/2009/01/24/qr-codes/ <p><a href="http://www.stepthreeprofit.com/">Brandon Wiley</a> invented an ATM machine this week for complementary currency using QR codes. Writing python code on Google App Engine, he wrote code which can generate a QR code using <a href="http://code.google.com/apis/chart/types.html#qrcodes">Google Chart API</a> and an oauth consumer to allow someone to redeem the currency without giving the ATM site the username and password to their account. The transaction was made with the <a href="http://wiki.github.com/oscurrency/oscurrency/web-service-api">OSCurrency API</a>. Some more API support needs to be done to make the transaction more resistant to counterfeiting, but it already makes a cool demo.</p>