What are the options for a child GPS tracker in Asia?

Hi, I’m traveling with my 5-year-old son this summer to Northern Thailand, Northern Vietnam, Yunnan, and Indonesia. I plan to equip him with a GPS tracker, but the SIM cards come with a contract. Do you know what the options are in Asia? Thanks, Nora

All you need to do is buy a Xiaomi tag, compatible with iOS/Android.

It works great! I use them for my motorcycle, luggage...