Water companies in Germany are forced to deploy digital water meters. It seems like some people are terrible afraid of them. They believe that these fancy water meters might cause health damage and lower water quality. You will find the news article here: https://www.wp.de/staedte/altkreis-brilon/angst-vor-schaedlichen-funkwellen-durch-digitale-wasserzaehler-id214510263.html There is just one question remaining: do these water meter comply with the GDPR? Personal water consumption is more of personal data than IP addresses since they allow a lot behavior analysis if leaked.