Large scale public wifi generally doesn&#x27;t have passwords, that clearly doesn&#x27;t scale, they have fancy enterprise auth things or captive portals. Shared password only works for small places like coffee shops.<p>Anecdotes: 1: on London Underground, my phone authenticates using the SIM somehow (it still shows a captive portal screen, just with an ad, yay). 2: in the Turkish lounge in Istanbul airport, the shared password was clearly a marketing channel, InvestInTK2016 or some such. It struck me as pretty clever.<p>&gt; if your business is using public unlicensed spectrum then you should be required to let the public in<p>&quot;Unlicensed&quot; isn&#x27;t really &quot;unlicensed&quot;, as much as specifically licensed for anyone to do with as they please. But to take your idea just one step further, once you&#x27;ve opened up all wifi for the general publics consumption (what a renaissance for wired networking!), would people using it be allowed to use it for private gain? Why is it wrong to use unlicensed spectrum for private gain, but not to use a service provided over the same spectrum for private gain? Also, as a business, under this doctrine, are you allowed to enable wifi access to a closed non-internet LAN, with only locked-down non-public servers on it?