A lock mechanism configured to be disposed in an electronic device is provided, including a first lock element, a recovering element, a balancing element, and a second lock element. The pharmaceutical package includes a housing and a card carrying medication that is slidably disposed at least partially within the housing such that the at least one medication is positioned within the housing. The ink receptive blend comprises in the range of from 20 to 80 percent by weight water-soluble polymer, and in the range of from 20 to 80 percent by weight substantially water-insoluble polymer based on the total weight of the blend.