For our Order Taking app I have an issue taking in new customers. Since at the shows the bandwidth gets too cluttered we try to keep it the app in 'offline' mode working locally but using a router to print using air print. The problem is adding new customers, since our app doesn't utilize device to device (even if it did i don't know if this scenario is even possible for device to device) One Sales Rep/iPad doesn't know if the other had already made that customer or made another customer using a similar or same name and company code (Code is to connect to our ERP system) So in theory if a customer comes back to a different Sales Rep/iPad, they might put them as a different customer and customer code which would mess things up. I had couple ideas but it does have couple holes. 1. Have one master iPad/iPod for this device. Sync everything to this device, but is it possible to do this locally with no internet using just the router as communication between the master iPad and the other iPads (using a local IP or some sort?). Also from the master iPad can i push the data back to the other iPads immediately? Or in theory, Do i even need a Master iPad? Can the one iPad push data to all others? For instance after they create a customer code, this code will be pushed to all other iPads to make sure they don't create duplicates. 2. Although there is a bandwidth issue at the shows (too many people using Hot spots, Cellular, and routers), the 4G Hotspot (Verizon) I used wasn't that bad. Maybe at least for customers and inventory, maybe should i just draw it live? This would definitely solve a lot of the issues. Since all of it will be just text, and only the Styles would be synced/downloaded at a separate time.