Thursday Morning Riddle

I’m a piece in a game used for keeping the score;
I am Geiger’s device; check-out desk in a store;
I keep track of each bean; a response made in war;
And opposing positions to what came before.

Who am I?

UPDATE: Riddle solved by Bronx Richie. See comments for answer.

2 Responses to “Thursday Morning Riddle”

  1. Bronx Richie Says:

    counter

  2. Bill Says:

    COUNTER is correct. Way to go, Bronx Richie!

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