Eggstra Eggstra read all about it

So last month I read about the new CBS advertising campaign whereby they use laser etching to put information about their shows on eggs. Looking into it, I found out that last year there was a story about a guy who decided that etching the use by date onto eggs would help to prevent salmonella. Now I read that in the England they're putting invisible ink on eggs so that it will be cooked perfectly. You choose between hard, medium & soft, once the shell reaches the desired temperature the invisible ink turns black, and the egg can be removed and thrown in the egg cup ready to have soldiers dipped into it. So here again is another killer app. The makers of egg timers must be quaking in their mansions...