Messages from lunettes

"LUNETTES" is an application that requires a verification code to access. The SMS messages received contain different codes for the user to enter into the app, such as 1916 and 1595. A web search reveals that "lunette" means something with a crescent or half-moon shape in French architecture, but it's unclear if this definition has any relation to the app itself. There are no further details about what kind of service or product Lunettes Pour Tous provides beyond needing these verification codes for entry into their application.