Updated on September 9, 2020 at 12:23 am
Not sure if there is such a thing now, but unique beacons provided by shipping companies such as UPS, FedEx, etc. to identify customers would be pretty cool.
Basically the beacon could be placed around the front door or other delivery location and when the delivery person arrives, their package scanner could detect it and let that person know they are actually at the correct address.
Maybe even expand it to detection by phones for the pizza delivery guy.