The PlayBook has not had a proper QR code scanner until now. Chris let me know about a new app called QR Scanner by Tobias Rothe that just hit App World which works very well. Hopefully RIM includes QR code scanning in the PlayBook APIs in the future but until then check out QR Scanner below.
Right now the app lets you see the text in the QR code and if it is a URL you can choose to open it in the browser. More features are promised to come but will probably have to wait until RIM releases more API’s.