1.
just in case; to be safe; as a precaution
Used when doing something as a precautionary measure, even though it may not be strictly necessary. Expresses the idea of being careful or thorough.
念のため確認しておく。
I'll check just to be safe.
Usage
A very common expression in everyday Japanese. Typically placed at the beginning of a clause or before the verb. 念 means "care" or "attention," so the expression literally means "for the sake of caution."