Dozens of companies buy location data from mobile apps, ad networks, cell networks, wifi networks, etc. and resell it. Some of the platforms will let you geofen

Dozens of companies buy location data from mobile apps, ad networks, cell networks, wifi networks, etc. and resell it. Some of the platforms will let you geofence your store then track phones back to where they "go home" to charge that night and then mail coupons to that address. https://heyirys.com/ https://heyirys.com/ https://www.redmob.io/ https://www.redmob.io/ https://echo-analytics.com/ https://echo-analytics.com/ https://www.factori.ai/ https://www.factori.ai/ among others.