In our collective experience, child harnesses, backpacks with a leash, or any infringement on a toddler’s freedom is a recipe for disaster. And despite all the frowns you may get, if you do have a rambunctious kids who is always on the move, there are other options to consider, especially when travelling to foreign places. With a watch-style family locator, you can keep tabs on them at airport and at crowded attractions. The child wears a small watch and you keep the transmitter. If you lose your child set off the alarm and follow the sound to find them.