This is an approximation of the small device on Jyn Erso's jacket band. The function of the card is not determined, and from what I can see, there is no corresponding female part on the device for the male parts on the corresponding side of the jacket.
The model is made for cosplay and fan art, no copyright infringement is intended or anticipated.
Many thanks to RPF user Laubi for the excellent hi-res images from the Nuremberg Toyfair!
Stratasys Dimension Elite
Make silver part first and stitch to jacket waistband using stitch holes. Be careful to lay thread into the stitch channel to ensure that the thread doesn't interfere with the black pieces to be glued on top.
Print black and red parts. The black "male" side of the clip also has stitch holes to make it easy to attach.
The small "lens" part is optional - you can print this or make a thick ABS/acetone mix and drop a blob onto some baking paper and let it harden off, then glue it in place.
Feedback welcome, I'm happy to adjust the design in response.