Comment by megamark16

Well, from a business perspective, if you're a company with equipment (medical, electronics, tools, etc) you could have employee "check out" equipment with their phones. If you're a company that works with documents (engineering, legal, what have you) you could attach barcodes to physical copies (shoot, you could overlay them on the digital ones to so they print off with the doc itself) and use them to easily pull up a record of the document. These are just a few uses that come to mind, but basically anywhere that you need to identify something or someone, you could use this as a starting point and build out from there.