Have You Ever Had 26 Bit Credential Capacity Problems?

In electronic access, 26-bit format credentials are still commonly used. Why? Have you had data limit issues?

For context, consider that 26-bit first was introduced in the early 1970's with Wiegand Credentials. 26 bits is not much capacity. Consider the approximate file size of a typical email is 75 Kilobytes, roughly 230% more data than what these credentials can contain.

In many cases, such a small size will not be an issue. From an HID brochure:

The 26-bit format consists of 255 possible facility codes. Within each facility code, there are 65,535 unique card numbers

But modern credentials often carry more than just a unique number. Cards/Identity templates often store names, addresses, contact numbers, biometric IDs, and even pictures.

The more information a card contains, the bigger it must be.

So again, do 26-bit cards work for you? Where have they been a problem?

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