This is great way to do bookkeeping. Use the iPhone camera!
A post from TechCrunch by Jason Kincaid start like this:
Expense reports are a pain. And, as if tabulating the amount you’ve spent on each trip wasn’t enough (not to mention keeping track of all the receipts), many businesses have archaic systems that make submitting a report even more arduous. Fortunately there are a few services looking to help make things easier — and some of them make it as simple as taking a snapshot with your phone.