In Precisely Terminated the main character, Monica, has to wear a small glass vial with a computer chip in it around her neck. This is so she can infiltrate various places and to keep the Nobles from knowing she doesn't have a chip of her own.
I decided I wanted this same type of necklace for myself. I ordered some small (1 inch tall) glass vials from etsy and cut up an old piece of RAM (a computer memory chip) and inserted the cut piece into the vial.
I'll soon find a string to thread through the hole and the necklace will be complete. I'm glad the computer chip doesn't run like the ones in the story!