This clue appeared in the NYT Crossword on Sunday, December 14, 2025 (4 Down). The answer is hidden below until you want it. Sunday puzzles are large (21 by 21) and themed, about as hard as a Wednesday or Thursday.
Answer length: 4 squares
First letter
R _ _ _
First and last letters
R _ _ D
Show the answer
About the answer
RFID as a word: (electronics) Initialism of radio-frequency identification. [(radio, telecommunications) The storage and retrieval of data using tags attached to individual ....
RFID has been an answer once in the NYT Crossword and Mini puzzles we have on file, which go back to October 23, 2025.
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