OSDP (Open Supervised Device Protocol)

OSDP replaces the legacy Wiegand protocol with bidirectional, encrypted, supervised communication between readers and controllers. EIG PRO specs OSDP-capable readers (Brivo, ButterflyMX, HID) on every new access control system to future-proof the install. OSDP (Open Supervised Device Protocol) should be read together with the project specifications, adopted codes, authority requirements, and referenced standards. A glossary summary explains the construction purpose but does not replace the current published document or a project-specific design review. Editions and local adoption can differ, so the design team should identify the controlling requirement before bidding or installation. For construction administration, document the requirement in drawings, specifications, submittals, RFIs, inspection records, and closeout material as appropriate. When two requirements appear to conflict, request written direction rather than selecting the less restrictive interpretation. That record helps the owner, designer, general contractor, and trade partners understand how OSDP (Open Supervised Device Protocol) was applied on the actual project.