Smart Scanner

I use this app for pizza delivery: scan the receipt with the number and then I call the customer without dialing in the digits-extra convenient and works well

You do need to hold steady for best results and it does a good job on my iPhone4!

does text (not handwriting obviously) numbers and QR codesusing for a couple of months no issues

app does what it says pretty goodit takes some time to be loaded on my 3gs, i mean its start is not "immediate", needs like 1-2 seconds to be loadedis it that my 3gs is getting old or is it the same on iphone 4?

The app is not perfect but it just does the job decently, making the phone calls to numbers written everywhere on paper just by one touch which is useful in many situations.