Edit window now closed, so an update: After much research and brainstorming with my friend Jerry, I'm hitting on some tags from Chipolo. They're in the same le

Edit window now closed, so an update: After much research and brainstorming with my friend Jerry, I'm hitting on some tags from Chipolo. They're in the same league as AirTags and Tile, designed for consumers to find their lost items, not for industrial applications. Much more expensive than a passive RFID tag, but the "reader" is just your phone, so that's an enormous win. And he only needs a few tags, which will be used over and over.