Here is another nifty wireless device on the market. From the Wired:
When your core body temperature gets out of whack – even 1 degree outside the normal range – it could be a sign of medical distress. But getting an accurate reading usually requires, ahem, a rectal probe. That’s not exactly convenient when trying to monitor a GI scrambling across a desert combat zone or a linebacker during a preseason scrimmage. Oregon medtech firm Mini Mitter has a less intrusive device: a pill-sized, swallowable thermometer called Jonah that transmits data wirelessly to a handheld. Jonah lasts from one to five days, depending on stomach contents and, ahem again, how things are moving down there.
According to Mini Mitter Co., VitalSense monitor can communicate with up to 10 Jonah capsules, doing a continuous data logging at the same time.