Tancy, sorry for the delay in answering your question. I have such a system, but it is used outside the Shopify community. Can you give me an idea of wht other packages you have looked at so I can put together a quick demo that takes into consideration what others currently offer? I guess the big player in this space would be StitchLabs, so I am not sure if they have something already, if it is too expensive too, complex, or what....any direction you can give me is helpful.
On a basic level, the system allows you to print a barcode label....which I think Shopify does already....or there is an app for it....see https://www.youtube.com/watch?v=-rhkL6SbyZg from David Lazar. Then the front-end of the system is a Web-app useable on a iphone, android that scans one or more barcoded items, with sub-second delays between multiple scans. The frond-end communicates with a back end database on my servers set up for inventories multi-variant items like apparel, that can be located in multiple locations. Anyhow....if OK, please give me your direct email address, so we can discuss further. Thanks. Steve Kohler