What credential format should I choose for a new access control deployment?
Start with 13.56 MHz contactless cards or smart-card hybrids: they offer better security than 125 kHz proximity, support modern encryption, and have a longer lifecycle. If you must integrate with legacy 125 kHz readers, use dual-technology hybrids to avoid wholesale reader replacement. Consult your reader manufacturer specifications.
Can I mix credential types (cards, fobs, mobile) in a single access control system?
Yes, if your access hubs and controllers and readers support multiple protocols. Hybrid systems enable gradual transitions and accommodate user preferences. Ensure your control system firmware supports all credential types you intend to provision.
How do I encode credentials on-site versus ordering pre-encoded cards?
On-site encoding requires an access control system with encoder support (via USB or network) and appropriate card printer/encoder hardware. On-site encoding is faster (hours vs. weeks) and allows real-time credential activation. Pre-encoded cards reduce upfront capital but have longer lead times and rely on vendor accuracy.
What should I do if an employee loses a credential card?
Immediately revoke the card in your control system database—it becomes inactive at all readers within seconds. Reissue a replacement card from your on-site encoder or request expedited pre-encoded cards. If your system supports mobile credentials, provision a temporary NFC badge on the employee's phone for same-day access restoration.
How long do credentials typically last before needing replacement?
Standard PVC proximity and contactless cards last 3–5 years under normal office use (wear, demagnetization, or chip degradation). High-durability cards in outdoor or industrial settings may last 2–3 years. Smart cards and hybrid credentials often last 5+ years. Plan for 10–15% annual credential loss/damage and maintain 15% inventory buffer.
Can credentials work offline or without a centralized access control system?
Standalone readers (not networked to a door controller or hub) can store access lists locally but cannot revoke credentials in real-time. If a card is lost, you must manually update the reader's offline database—a security and operational risk. Always use networked readers linked to centralized access hubs for real-time enforcement.