"CAPI works by establishing a direct server-to-server connection between businesses and advertising platforms, capturing conversion events that are often lost due to tracking restrictions, ad blockers or browser privacy settings."
As the quantified self movement has grown, it raises critical questions regarding the actual accuracy of consumer wearable devices in measuring personal health metrics. Our umbrella review shines a light on these devices' performance in tracking heart rate and other key parameters, revealing a broad range of accuracy that varies according to several external factors.