I have designed a simple electronic voting system using the (HTML-PHP-MYSQL) combination and i would like to know what i should do to prevent voters from voting more than once by clicking the 'back' button and voting again?
I have designed a simple electronic voting system using the (HTML-PHP-MYSQL) combination and i would like to know what i should do to prevent voters from voting more than once by clicking the 'back' button and voting again?
