With the proliferation of barcode readers, it becomes more and more apparent that traditional applications that rely on these codes: item tracking and warehousing have no built-in security, some even allowing direct executable code injection via barcodes.
Install "Barcode Scanner" (available in the default android market). Open a contact (I am listed in my own contacts list), hit menu, select share, select Barcode Scanner, see a QR code on your screen that someone else can scan.
Looks it got pulled in the meantime. Oops. Looking at it now it says in light gray letters at the top "for docomo" so maybe it was some kind of beta that I accidentally downloaded.
Here's a link to author's blog - there are examples of using zxing library for generating the QRCode. HTH.
Nice but this is basically what http://www.p8tch.com/ has been doing for years with real qr codes. You get a patch with a qr-code that you can redirect to any URL you want.
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[ 2.2 ms ] story [ 52.1 ms ] thread(I ran into an error trying to connect with fb; second time worked.)
And my Rate My post from ~August: http://news.ycombinator.com/item?id=1672140
I've moved away from it since, though.
http://www.securitytube.net/Hacking-Barcodes-video.aspx
Also: "simpleqrcode" app on android market allows you to encode your contact info into a QR code directly.
Here's a link to author's blog - there are examples of using zxing library for generating the QRCode. HTH.
http://d.hatena.ne.jp/tomorrowkey/searchdiary?word=*[qrcode]
I have one on my backpack, sorry for the awful picture: http://i.imgur.com/DvyCy.png