Or even *better*, you could have them produce a sonar ping that search and rescu...

		ynniv on June 3, 2009 \| parent \| context \| favorite \| on: Ask HN: Why do airlines still use "black boxes" ? Or even better, you could have them produce a sonar ping that search and rescue could listen for... which is what they already do. :-) [ http://trueslant.com/milesobrien/ ]