You can easily confirm your CAFÉ de CRIÉ point card information such as balance, expiration date !
$ git clone https://github.com/owlinux1000/cdc_checker
$ cd cdc_checker
$ go build
$ emacs .env
CARD_ID='XXXXXXXXX'
PIN_ID='YYYYYY'
$ ./cdc_checker
{"card_id":"XXXXXXXXXX","balance":"¥551","expiration_date":"2020/06/19"}