application for iPhone to read bar codes

Question

I need to read different bar codes, and would be great that I can use my iPhone for that. Currently I have an application to read QRCodes but I'm looking to read PDF417 too.

Answer 1

I use
RedLaser for "normal" codes and ZBar for QRCodes.

These are the fastest and most stable I could find. Plus, they are both free.

Answer 2

Red Laser has just updated to read more types of barcode. Plus it's free.