官网有答案： Can you use your credit card for public transportation in Istanbul? Istanbul offers a contactless payment system for its public transportation, which allows you to use your credit or debit card, or your mobile phone with a contactless payment feature, to pay for your fares. This eliminates the need for a physical Istanbulcard. You can easily tap your credit card on the contactless reader on the turnstile or the card reader on the bus to deduct the fare for your trip from your card balance. If you prefer to use your mobile phone, simply hold it close to the reader to complete the payment. Keep in mind that some credit cards may not be accepted by the contactless payment system, so it’s best to check with your card issuer beforehand.