Track Your Child's Location Using GPS
There are number of different child-tracking and child-location devices from various manufacturers on the market--and they use a variety of different technologies ranging from RF to GPS. RF solutions work indoors and out, but typically function only over limited distances of several hundred feet--or even less if they are transmitting though walls (the BrickHouse Locator, which is featured in a Duracell commercial uses RF). GPS has potentially unlimited range, but only works when the device has a fairly unobstructed view of the sky--and they seldom work when indoors.
U.K.-based company, Lok8u, has just announced its GPS-based child-tracking device, the num8. The num8 is disguised as a working digital watch that your child wears; inside the watch is a GPS antenna and "proprietary Cell ID technology." The device is waterproof and can work for up to 100 hours on single charge.
The num8 is not shipping yet--it will be available starting in the U.K. in March for £149.99 (MSRP), and then in the U.S. in "late spring." A price has not been set for the U.S. yet, but the U.K.'s price presently converts to about $222 U.S. dollars. In addition to the cost of device, there will also be a monthly subscription plan to utilize the service. U.K. pricing for the various subscription plans range from £4.99 per month (for one text alert per month, additional alerts cost extra) up to £19.99 per month (for unlimited texts).
Some folks will regard this type of technology as too invasive or potentially delving into the realm of paranoia; while others will see it peace of mind for when their children are out of sight. For those who are considering the num8 or other similar GPS-based technologies, be aware that they will only work when outside; once your child enters a building, the GPS antenna will no longer be able to ascertain its location--although presumably it should remember its last known location and the cell service should still be able to transmit.