Access Card Holder

I ride a motorbike to and from work, and need to use an access card to get into the underground carpark.

I modeled this holder in Fusion 360. With a velcro strap, I can wear it on my wrist, making it easy to present the card and open the roller shutter.

This is sized for a regular credit-card size, and is best printed with 100% infill and with the slot for inserting the card pointing upwards.