You can check by following steps.

1) If you have a full-year or summer pass and will be paying by credit card
1. Log in to the facial registration site.
2. Select the "User information settings (to NEC site)" button on the facial recognition service settings screen.
3. Make sure that the payment method is displayed as "Credit card." After confirming, select the "OK" button.
4. The credit card update screen will be displayed, so make sure that the credit card you want to use is selected.

2) If you will be paying with Myakupe!
1. Log in to Myakupe!.
2. On the facial payment management screen, make sure that facial payment is enabled.
3. Make sure that the ticket you want to pay for with facial recognition on Myakupe! is displayed as "Facial recognition linked."