Automatically Tweeting with a QR Code

To continue with my QR fever, I've been looking into what can be easily automated using QR codes.

Twitter
The first thing I found is how to tweet from a QR.  This is fairly easy since any QR can contain a URL; So, the only thing needed is a URL that will tweet.  A quick search on the web revealed this.

http://twitter.com/home?status=insert%20your%20message%20here

Use these codes for special characters – (%20 is a space) (%40 is @) (%25 is #) (More here).  Given that, you could even include a mention, a hash tag, or even a tiny url.  I'm trying to figure out how to include a location in a tweet, but that's proving more difficult.  If anyone knows how to do that, please let me know.  Once you have the text, you can put it into the QR code generator on Google's chart API.

Facebook
The next thing I found is how to make a QR code to get someone to Facebook.  Unfortunately, there's not really an easy way to get people to 'like' something on Facebook by just scanning the code.  What you can do is point people to your Facebook page (or to any URL really) and hope they like it from there.  One thing you can do is point them directly to a 'like' page within Facebook.  This is accomplished by creating a URL like this:

https://www.facebook.com/plugins/like.php?href=http://stuart.weenig.com

Click on the link above to see what this looks like.  You can replace the href=http://stuart.weenig.com with your own URL (like href=http://www.facebook.com/NetQoS).  This will bring up a very small like button that the user can then click on.  The nice thing about this is that if they're already logged into Facebook in their browser, they'll get a richer experience.

LinkedIn
Turns out sharing something to LinkedIn is pretty easy.  I used the qr generator at QR Stuff to figure out the link:

http://www.linkedin.com/shareArticle?mini=true&url=http%3A//stuart.weenig.com


I thought it was weird that the colon needed to be translated but that the forward slashes did not.  If you find that you need it, the URL code for a forward slash is %2F.  As you can see by clicking on the link above, the forward slashes do not need to be encoded for the share to work.

Locations
My next goal will be to figure out how to enable location based check-ins through Facebook and twitter.  If anyone already knows how to do that, let me know.

Using QR Codes to Share Contact Information

I recently saw a QR code at the entrance to a local hobby store here in town and decided to see what would happen if I scanned it with my camera. Since I already have a QR reader app on my phone, I fired it up and took the shot. I was startled to see that my phone now had a contact screen showing the contact information for the store, hours, website, etc. It was pretty cool, especially since the store is a local store that has nothing to do with high technology.

Since then, I've decided to get ready for CA World by seeing how hard it would be to put my own contact information into a QR code. Then I could paste the QR code onto my badge and quickly and easily share my contact information with other people at the convention. It took a while and I learned a little bit, but here are the results:

The best place I've found to generate a barcode was (surprise, surprise) Google. They have a chart API that you can use to build charts and display them on web pages. Very cool. As it turns out, all QR codes are really just text. You start by embedding contact information in a very simple markup (popularized by NTT DoCoMo), then pasting that into the QrCode chart type.  Tweak the parameters and you end up with a nice little code that can be read by most scanners.

The trickiest part is to format the text using the markup language.  For example:
MECARD:N:Stuart Weenig;URL:http://stuart.weenig.com;

would result in this QR Code:


In order to embed more information into the code, just add fields.  For example, you can add one or more telephone numbers.

Name	N:	Designates a text string to be set as the name in the phonebook. (0 or more characters) When a field is divided by a comma (,), the first half is treated as the last name and the second half is treated as the first name
Phone Number	TEL:	Designates a text string to be set as the telephone number in the phonebook. (1 to 24 digits)
Video Phone Number	TEL-AV:	Designates a text string to be set as the videophone number in the phonebook. (1 to 24 digits)
E-mail	EMAIL:	Designates a text string to be set as the e-mail address in the phonebook. (0 or more characters)
Memo	NOTE:	Designates a text string to be set as the memo in the phonebook. (0 or more characters)
Birthday	BDAY:	Designates a text string to be set as the birthday in the phonebook. (8 digits) The 8 digits consist of the year (4 digits), month (2 digits) and day (2 digits), in order.
Address	ADR:	Designates a text string to be set as the address in the phonebook. (0 or more characters) The fields divided by commas (,) denote PO box, room number, house number, city, prefecture, zip code and country, in order.
URL	URL:	Designates a text string to be set as the homepage URL in the phonebook. (0 or more characters)
Nickname	NICKNAME:	Designates a text string to be set as the nickname in the phonebook. (0 or more characters)

Another idea I had was to tape a QR code on the back of my phone. So that in case it gets lost, someone can at least know who it originally belonged to. This would also make it easier to share contact information with just about anybody.