Explanation
In France, beckoning someone with your finger (especially the index finger curling toward you) is seen as a gesture used for calling animals or inferiors, and is therefore considered rude and demeaning when directed at a person. It implies a lack of respect and can cause offense in everyday social or professional interactions.
Local Tip
Instead, use a subtle nod of the head or an open-handed wave with palm facing down to politely invite someone over.
How it compares elsewhere
Beckoning with the index finger is considered very rude and is used only for animals; instead, wave all fingers together with palm down.
Beckoning with a curled index finger can be seen as an insult or a gesture for calling a dog; use a gentle hand wave with palm down.
While often acceptable among friends in casual settings, it can be perceived as condescending or aggressive in formal or professional contexts.