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> old Dos versions of Autocad which had a physical dongle.

Those didn't go away in the industry, though AutoCAD moved away from them. Resolume (professional VJ software) and Avid (professional video editing software) still have hardware dongles. Arguably so does Davinci, theirs are just much bigger ;). progeCAD (AutoCAD compatible CAD program) also has USB protection dongles available as a license option.




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