Quote Originally Posted by art-tech-uk View Post
I have a Garmin Montana 650t and a etrex Legend HCx but i don't see anything in the menus relating to card id
Both your devices do not have the option for showing of card ID. No software help you too! Exception are some build-in card-riders as mentioned above.
Only owners of Garmin Nuvi can help to you. Or you can try install a Garmin Mobile XT program what will suitable for you smartphone if you have it...