I've built an e-shopping website for a big company which has country offices. 

**What i want to do is the following** 

1. Generate barcode via PHP before sending package to country offices of company
2. When the item will be arrived to country office, workers will login to their account, scan this barcode via barcode reader (which located on package) and website will automatically "approve" that item received.

Is it possible only with web interface? I mean without any local application. How to do that? PLease explain.