Small application for carriers. It alows to scan barcode form shippment label and get the signature from customer (POD - proof of delivery). It's possible to save signature as png file (name of the file is barcode content) and send it via ftp. OpenN
As to mobile barcode solutions, I'd like to recommend two great mobile apps I've used: http://www.onbarcode.com/products/android_barcode/ http://www.onbarcode.com/products/iphone_barcode/ High quality and mature barcode library for mobile platforms which generates multiple linear and 2D barcodes.