HID 2120BGGNVM Composite iClass + Prox 2K/2 Card

The HID 2120BGGNVM is a composite card with both iClass (13.56 MHz, 2K/2 memory) and 125 kHz Prox technology embedded in a single ISO ID-1 form factor. Composite cards bridge legacy Prox and modern iClass reader infrastructure during a credential migration period, letting a single card work everywhere instead of forcing the cardholder to carry two credentials.

Key Features

• Composite HID Prox + iClass 2K/2 contactless card
• HID Prox: 125 kHz, factory programmed
• iClass: 13.56 MHz, 2K/2 memory
• ISO ID-1 (credit-card) form factor
• Single credential works on legacy and modern reader infrastructure
• Glossy face suitable for direct badge printing
• Compatible with HID Prox readers and iClass-capable readers

Credential migrations rarely happen overnight. Composite cards let cardholders carry one credential that works on both legacy Prox readers and modern iClass readers throughout the migration window — typically months to a few years depending on door count. Without composite cards, cardholders either carry two credentials or the migration must happen door-by-door in lockstep, both of which are operationally painful. The composite card removes that friction and gives the IT/security team room to migrate at a pace that fits the operational calendar.

Plan the migration sequence — typically perimeter doors first, then high-security interior doors. Train issuance staff on the dual-technology card so they understand which side is programmed during deployment. Specify the iClass key strategy (standard, custom, or Elite) up front. Track issued cards in the access-control system and de-activate lost or returned cards promptly. Document the migration target date so the composite-card transition is bounded and the site eventually consolidates onto iClass alone.