I found this Autism GPS tracker at Amazon
It seems that this is very futuristic GPS device that answer many of the concerns for parents for autistic kids
among the features that his product has:
Monitor two devices’ distance and temperature.
This device Long Battery Life that it is very important feature also it have Life-threatening Temperature Alert
One-way Wireless Child Tracking Devices for autistic children is Small Size, Light Weight, Wide Operating Temperature Range
One-way Wireless Child Tracking Devices uses Single Standard “AAA” Battery, Works inside purse, backpack, building, tunnel, boat, forest, cave, dirt, debris. Stand-alone
With the One-way Wireless Child Tracking Devices you don’t have to have any Subscription or Monthly Fees !
Certified for Use in Safety, Security and Rescue in the USA and Canada
No need to see the sky like GPS or to stay within fixed WiFi or cellular coverage.
Learn more about this product at Amazon store