This is the 9520th most frequent Russian word.
фн
The term "фн" does not have a clear standalone meaning in Russian and might be an abbreviation or typo. Context is needed for precise interpretation.
Here, 'ФН' refers to 'Фискальный накопитель' (Fiscal Data Recorder) required by some regulations.
ФН теперь обязателен на кассе.
FN is now mandatory for the cash register.
In this context, 'ФН' denotes a physical device used for storing fiscal data as part of transactions.
В магазине установили новый ФН.
The store installed a new FN.
Here, 'ФН' refers to the status or functionality of the fiscal recorder during its operational check.