“ good idea, but... This requires permanent attachment of iphone to human body... and although many people carry phones around, they don't carry it... (read full comment) ” 

Posted on July 8, 2007 at 1:38 PM EDT

“ Very good point, but biological materials are susceptible to change in harsh environment - namely, oil field. (read full comment) ” 

Posted on February 27, 2007 at 10:07 PM EST