Following the mandatory use of HES code, Istanbul Metropolitan Municipality took the necessary steps for the new period and started the practice of linking HES codes with Istanbulkart. After January 15th, Istanbulkarts without a linked HES code cannot be used on public transportation. Card users can enter their personal information together with their HES Code at the website provided at this post. Linking the HES code to the card can be done easily by entering the required fields on the website.
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