The present invention provides a transthoracic drug delivery device that utilizes pressure to determine the precise location of the distal tip of the delivery tube of the device to insure that therapeutic substances are ejected into the myocardium and not dissipated in unintended tissue locations. The outer column 1 and the bushing are stopped against rotation to the clamp members and at the same time when the outer column is adjusted in its telescopic position in respect to the inner column, the outer column, clamp members and bushing can be integrally and axially slid. Both biometric readings are verified before access to resources of a smart card are made available to the requesting user.