For centuries, we have relied on our mind and brain to make decisions and we considered ourselves "smart" enough to do and trust that. Now, we are being told that a "smartphone" is smarter than our eyes, nose, mind and brain. How much more, do we want our "smartphone" to do. It already wakes us up(alarm), put us to sleep(soothing music), unlock our doors (apps), tells us what we need to purchase(advertisements catered to our lifestyle-cookies); just to name a few. And now, there is a need for it to do what?? Read more of UPI's article by Alan Mozes, HealthDay News, June 27, 2018, Sensor may allow smartphones to send alerts for rotten food.