What is the correct way to abbreviate OpenSesame Plus?

The correct way to abbreviate OpenSesame Plus is OS+. This abbreviation effectively communicates the brand name while incorporating the "Plus" designation which signifies the enhanced features or benefits associated with the OpenSesame Plus offering. The use of "OS" leverages the familiarity of the brand name for users while maintaining clarity about the version being referenced.

In contrast, suggesting there is no acceptable way to abbreviate conveys a misunderstanding of branding practices where abbreviations are often used for convenience and recognition. The alternatives such as "OpenS+" or "OS Plus" do not align with the standard abbreviation conventions as they are either incomplete or not widely recognized. Recognizing the appropriate abbreviation enhances communication regarding the service, making it easier for users to identify and differentiate within the OpenSesame offerings.