If your Interac debit card does not allow entry when you enter a transit authority point-of entry (POE) terminal, you should first consider if this is only happening at the fare reader. If your debit card has been working when making Interac Debit contactless payments at other merchants, then it is most likely isolated to payment with the associated transit authority. Your first point of contact for problems with access to a transit system is always the transit authority. The most common reason for access being denied is money owing to the transit authority because of a declined payment on a previous trip. You can ask your transit authority to confirm whether or not you owe money. You may need access to a recent bank account statement. Depending on the transit authority, they may include a Merchant Transaction Reference (MTR) value with transactions posted there that will help the transit authority to assist you. In some very rare instances, a problem with your card or mobile wallet may be preventing system access (e.g. security issue with your card). If the transit authority suspects this, they may recommend that you contact the bank for assistance.