All of them are too big for infants and kids! Kids or kidnappers will easily find and remove these devices. Only the airtag is small enough, however it alerts other users that an airtag is close by so it gets located and thrown away easily... Silly that in 2024 there is no major tech breakthrough for very small gps devices that are also waterproof and perhaps made from modern elastic materials for additional comfort and to make it harder to detect and remove...
