So, my mom's always after me to carry some ID when I'm running. Probably a good idea...I mean, I could be gone for over 2 hours before anyone even thought about being concerned. Plus, I don't usually know where I'm going on my run except in the rare case that I have a specific destination. I hate carrying stuff with me while I run. I'm not exactly sure how it happened, but I came across Road ID. I ordered the wrist ID thing. I've worn it a couple times, and it's pretty non-obtrusive. Last Sunday, I noticed that Conrad has one of the ankle ones. I guess it is a good idea. If you're a runner/other type of go-far-away-from-a-single-location athlete, check the website out.
Important: search online to get a coupon code that gets you $2 off. There are always some active. It's worth searching for. Note that a lot of what hits on a search engine is expired...keep trying, it's worth it if you value your time at less than $30/hour.