I believe the sign-in process would be simple. They ask for your RR Number (optional) at time of purchase. This number could be made mandatory/required for multi-device use. With that number, it would tie back to your account. When initial sign up occurs, your MAC Address is then registered to that RR Number. Now SWA could do a couple of things, either allow only 1 device at a time or multiple devices up to a limit (i.e. 1-3 concurrent devices). At signup with your 2nd device the website could have a section "Already paid for WiFi? Input your RR Number at time of purchase here." At that point, after entering that and pressing enter, it'll do 1 of 3 things: A.) Click "Transfer Connection" to use your new device and start browsing. (This would be used as the initial option if they allow only 1 device at a time) B.) Click "Connect" to use your new device and start browsing. (This would be the initial option if SWA allows multiple devices) C.) Click "Swap Device" to use your new device and start browsing. (This would be the initial option if SWA allows multiple devices and the subscriber has reached their limit) Option C.) would then allow the user to select which device to remove before adding the new device. This is a very easy system and common practice solution most public WiFi locations utilize ranging from hotels, to RV parks and Marinas. I'm sure SWA's WiFi partner/provider can offer such a system. It's not a new technology to do so on the back-end.
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