We are the specialists who know every format

Security ID Systems exists to solve a narrow, frustrating problem: the access card or key fob you rely on is often controlled by a single manufacturer, who charges a steep premium for spares — when they sell them to you at all. For the common formats, plenty of vendors can help. For the specialist, proprietary and regional formats, the original maker is usually the only source.

That gap is our entire focus. We supply compatible RFID and proximity credentials — cards, key fobs and tags — encoded by specification to read identically to the original on your existing readers. Across 369 documented formats, including 158 with no compatible sold anywhere else online, our advantage is knowledge: knowing exactly how each credential is structured and how to reproduce it correctly.

We are deliberately precise about what we are. Our credentials are independently manufactured to be compatible with these systems; they are not OEM-branded products, and we're always clear about that. We are not affiliated with the manufacturers whose formats we support. And when a credential is secured by strong encryption, we supply a compatible blank for your own system to enrol — and we tell you that up front.