Barium Ferrite access cards are described as which of the following?

• A. High security only
• B. Inexpensive and provides high security
• C. Expensive and fragile
• D. Commonly used in residential access

Answer: (B)

Barium ferrite access cards sit at the affordable end of magnetic stripe technology while still delivering reliable security for access control. The barium ferrite material provides good data retention and resistance to stray magnetic fields, which helps protect the stored information from easy erasure or corruption. At the same time, magnetic stripe production is inexpensive, so these cards are cost-effective to mass‑produce and replace. That combination makes them described as inexpensive and providing high security. They’re not typically the most expensive or fragile option, and they’re more commonly used in commercial access systems than in residential settings.