A method and apparatus for monitoring adherence to a dosing-regimen for a medication is presented. Systems in accordance with the present invention automatically monitor the medicine content of a blister card based on the state of its lidding film and compare it to the prescribed dosing regimen for the medicine. In some embodiments, the lidding film is imaged using a tomographic imaging technique, such as electrical resistance tomography or electrical impedance tomography. Alternative sensing approaches are based on optical, acoustic, and tactile sensors that interrogate either the dispensing region at each tablet location or the tablets themselves to determine whether tablets have been dispensed. Automatic monitoring of the blister card enables the user to be: (1) alerted to non-compliance, (2) alerted to a risk of future non-compliance, and/or (3) to be provided remediation instructions when non-compliance is determined.