A few weeks ago, Jackson bolted in Target. When I found him, he was 1/2 way across the store. So I spent the night comparing child locating devices on line--LoJack for babies. There are all kinds. Everything from GPS enabled devices that are trackable online (with or without a monthly subscription fee) to radio frequency beepers. I opted for the latter option--much cheaper, instant, and practical. Sure, my child could be abducted, but statistically that's a pretty remote possibility. The likely scenario is that he either runs or drifts away in a public place (or the backyard).
We opted for the Mommy I'm Here Child Locator. $25 at Amazon (link from the blog title). This one seemed the most practical and had better reviews. The only negatives were from units that arrived with a dead battery. Our's arrived in good working order.
Only drawbacks are that it sometimes beeps with no apparent reason, but I could've leaned on the button. You also have to thread it through something-- a belt or shoelaces for example. Minor inconvenience for peace of mind. Bonus, I'm not the parent with a toddler on a tether.
1 year ago