An array assembly and a method of fabricating such an assembly. Methods for the preparation of the compounds are disclosed. If the user inputs a wrong authentication phone number, the user is illegal and cannot use the mobile phone, the system acquires the phone number of the inserted SIM card to notify a legal user. It is demonstrated that the utility of such prior art open-loop configurations is limited by the fact that the achievable precision of the valve position is hindered by static friction in the valve system, and the non-linear character of the torque versus shaft-angle of the motor. Bias techniques can be used to read un-programmed ROM cells accurately.