use get_current_screen() to narrow the scope of a function

get_current_screen.php

function admin_footer(){
		$screen = get_current_screen();
		if ( isset( $screen->base ) && $screen->base == 'profile' ) {
			echo "<script type='text/javascript'>
				if( jQuery('#GA_enabled').is(':checked') === false ) {
					ShowOrHideQRCode();
				}
				</script>";
		}
	}