Best/fastest for identification purposes are collar with tags - I like Boomerang tags https://www.boomerangtags.com/collartags/ My dogs' tags have my address and two phone numbers. Additional tags can be your adoption group, town license, rabies, etc. but your phone # should always be on them.
Microchips are great if someone gets your dog to a vet or shelter to have them scanned - and always make sure your contact info is up to date.
Ear tattoos are a good (but last) option for IDing.
For real time tracking, Air Tags are okay, but not ideal. GPS collars will give you the most up to date location. I use Link https://www.linkmypet.com/ and we have to charge it every couple of days. There is also Whistle, Fi and a lot of others out there.