In the early 1980s, the French banking sector decided to migrate from the magnetic stripe card-based payment system to a more modern and secure microprocessor card-based system. Schlumberger received its first contract in June 1981 to provide GIE Cartes Bancaires, the French credit/debit card issuers’ association, with 5,000 microprocessor cards and 200 associated POS terminals. The microprocessor card-based payment system subsequently became standard in France and eventually led to a global standard known as EMV, set up by Europay, MasterCard and Visa.