How is “chip in” used?

In Black Widow (2021), one line is: “I had to put a chip in the back of her neck.”

Which movie is “chip in” from?

The clip at the top of this page is from Black Widow (2021).

I had to put a chip in the back of her neck.

7 作品で登場 · 1 本目

to join in or interrupt a conversation; to add sth to a conversation or discussion

14 本の映画に登場

1
chip in (with sth)
to join in or interrupt a conversation; to add sth to a conversation or discussion
Pete and Anne chipped in with suggestions.
2
chip in (with sth)
to give some money so that a group of people can buy sth together
If everyone chips in we'll be able to buy her a really nice present.

定義：Oxford Advanced Learner's Dictionary 第 9 版