There's been a nearly 70% decline in always-on location data, since iOS 13 rollout - Marketing Land
https://feedxmedia.blogspot.com/2020/01/theres-been-nearly-70-decline-in-always.html
More than GDPR and CCPA, operating system privacy controls may impact the the availability and quality of location data.
from Marketing Land - Marketing News & Management Insights
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