Free Qr Code Reader is fast and easy to use.
Just open the app and show the qr code to the camera then it reads QR codes writes it to a textview then you can copy the text or run the reletad app

IMPORTANT: The Applicaiton reads only Qr Codes Standart barcodes doesnt supported.

Supported Qr Code Types:
Web:
- Website Url
- Bookmark a webpage
Phone Book
- Contact Adding (Vcard)
Communication
- Phone Call
- Send Sms
- Skype Call
- Send Email
Social Media
- Facebook
- Twitter
- Tumblr
- Youtube
- Vimeo
- Linked-In
- Pinterest
- Blogs
Google Play Market
Geo Location (Google Maps)
Calendar (Add Event From Qr Code)
Wifi Settings (Add Wifi Profile From Qr Code)
Paypal (Buy Now Code)