Certain aspects of the present disclosure provide a platform for monitoring patient adherence to a medical regimen. Certain aspects of the present disclosure also proved various components that may help enable such a platform, such as a smart collar capable of detecting removal and/or insertion of objects from a container (such as a pill container). In some cases, a smart collar may include a first portion having sides adapted to guide objects toward an opening in the first portion sized to allow the objects to pass, at least one detector proximate the opening and responsive to removal of objects from the container as they pass through the opening in the first portion, and a processor configured to process a first signal generated by the detector to update a monitored count of objects in the container.