<http://schema.org/topics>
"Android,android appls,apps,features,Mobile,mobile apps,Mobile Lists,qr code android,qr code app,qr code reader,qr code reader android,qr code scanner,qr code scanner android,qr code scanner app,QR Codes"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/06/22/qr-code-apps-android/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A%20Mashable%20%28Mashable%29>