I got some new toys a couple months ago, and I stuffed a picture into a draft post here. Which has languished. I've got five minutes before my self-imposed no-work-during-lunch time is up, so I figured I'd just post a quick summary.
On the left is a Mio heartrate monitor watch. Your arm presses on the back, and you apply to fingers to the front, and it counts beats. It also works just fine putting one finger on the back plate, and two fingers of the other hand on the front. My heart races in the middle of the day for some reason, so now I'm recording it over time, to have a little more insight. This works well.
On the right is the Garmin GTU-10. This is a GPS receiver with built-in GSM. It monitors position and uploads that to a web site. It'll email you if the tracker goes outside a "geofence," too. So far, it's doing a lousy job of tracking my location -- inside buildings it's useless, of course, but outside it seems to only get a fix when I'm standing still for sixty seconds. Fun trick, but you're better off with an android phone and an app.