Tesla Keycard storage, hidden

I made this for my Model Y. The problem I am trying to solve is to come up with a secure (out of sight) but easily accessible storage for the keycard. Since my key is my phone if I need to leave the car with a valet or mechanic (or a friend) this means the key card is easily available and I don't need to search for it or leave my phone.

I have simply made something glued to the underside of the armrest container to hold the card. It is hard to see in the photo but it is there.