php - How to make an iPhone web app only available to certain iPhones -


im making iphone web app people need access it. whats best way make secure without having people login every time open it.

could http://www.domain.com/iphone/index.php?a=1234&b=5678 make longer strings make more secure on index.php page check equal right string?

like: if($_get["a"] == '1234' , $_get["b"] == '5678' { echo 'blah' } ...etc etc.

or there way check serial numbers or mac addresses of iphone?

you ip whitelist? or make them login once, , save persistent cookie session id.


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