I found these two suggestions as ways to make it more difficult to lose young kids. I pass them on because anything that ccan do that should be spread around. Anyway here they are (and I got them from here)
If you have your children with you out in public, and it’s a busy place, there is almost always a nagging fear of, “What if I get separated from them?” One of the solutions you can use to help alleviate this fear is to get a Sharpie® and write your cell phone number clearly on your kid’s arm. It’s easy to do, doesn’t wash off, and is a very clear way for another adult to contact you should your kid get separated from you. I should note that this is more useful for very young children. Older children should know your number by heart.
Set up a generalized, agreed-upon place for your kids to find you or for you to find them in a store if they get lost or separated from you. For example, “the back-left corner of a store”. Make sure they know where that is when you walk in the store. Maybe have them point it out to you. In that example, make sure they know that “left” means “left when facing the back of the store”. Also, don’t make it near an entrance. Just try to make it something that they can figure out if they are by themselves and something that is general enough to be applicable to almost any store.
That second one reminds me that some Australian Aboriginal tribes used she-oak trees as the meeting place in case of emergency. Young children were taught to head for the she-oak trees if they got lost.
