The first card used in Senegal was a Landis & Gyr that was supplied to oil platform workers. The card, a red “Sodeco” of 120 units with the code “006 + 6 numbers” and optic band of 2mm, was tapped on the payroll sheet at the end of the month, and for this reason most cards have a hole deriving precisely from the stapling machine. 5,000 were printed.
The following year the first public cards were issued: they were two Landis & Gyr blue cards with the Sonatel logo, one of 40 units, with 5,000 runs, and one of 120 units, with 45,000 circulation. In 1989 the chip card system was introduced.