I'm currently monitoring for Wifi probes with a RPI 0W and external Alfa USB adapter. Interestingly, some parcel services use handheld barcode scanners that do

I'm currently monitoring for Wifi probes with a RPI 0W and external Alfa USB adapter. Interestingly, some parcel services use handheld barcode scanners that don't even try to randomize their MAC or hide their name. (German blog post https://blog.rolandmoriz.de/2019/01/08/eine-flasche-metadaten-2-wifi-probes/ https://blog.rolandmoriz.de/2019/01/08/eine-flasche-metadate... )