SAN FRANCISCO (AP) — Apple and Google are teaming up to thwart unwanted tracking through Bluetooth devices that were created to help people find lost keys, keep tabs on luggage or to locate other things that have a tendency to be misplaced or lost. The two companies submitted a proposal Tuesday to set standards for combatting secret surveillance on Apple’s AirTag trackers and similar gadgets. The $30 AirTag has become a popular item since its 2021 release, helping users pinpoint the locations of a wide variety of lost property. But stalkers have also deployed AirTags and similar products to follow people who are unaware.The goal is to have a mutually acceptable plan in place by year’s end.