Techniques provided herein are directed toward accurately determining when an item is removed from a blister pack by utilizing capacitive sensors. The capacitive sensors may be positioned on each blister of the blister and may detect the presence of the skin of the finger and/or the whether the blister has been deformed, which can occur when an item is removed from the blister. Some embodiments may determine whether skin was detected at the time of extraction to determine whether extraction was intentional.