A method structures a chemical amplification photoresist layer, in which a photoresist layer of the chemically amplified type is brought into contact, before or after the exposure for structuring, with a base which is capable of diffusing into the photoresist layer. Moreover, a spring element, which acts on a first of the three lever arms, and an adjusting means for adjusting a second of the three lever arms are provided. Inmates may thus bypass the normal land line telephone control system commonly used to control communication into and out of a prison, such as described in Gainsboro U.