A set of 3 magnetic cards with deep notch was issued by GPT: 50 units (15,000 printed), 100 units (7,500), and 800 units (2,500) and they went on trial in 1989. After some years of silence, a new set of pictorial magnetic cards were issued and then, in 1996, magnetic cards were withdrawn and new public payphones based on chip card technology were installed and are now in use.