# Access Control Protocols

Tutorials about various access control protocols, everything from bit formats to communication formats.

## 4 guides

- [**How to hack a UHPPOTE system to work with Apple Access Passes**](/content/guides/access-control-protocols/how-to-hack-a-uhppote-system-to-work-with-apple-access-passes/index.html)
  
  It's janky, but it works - how we got our credentials working with UHPPOTE systems.
  
  Auston Bunsen
  
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- [**Decoding the Wiegand protocol**](/content/guides/access-control-protocols/decoding-the-wiegand-protocol/index.html)
  
  This guide demonstrates how to decode the widely used 26-bit Wiegand protocol using Python on a Raspberry Pi, including detailed wiring instructions, code implementation, and an explanation of its ...
  
  Auston Bunsen
  
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- [**Examples of every access control bit format**](/content/guides/access-control-protocols/examples-of-every-access-control-bit-format/index.html)
  
  We created 70 sample bit streams for the most common bit / card formats so you don't have to.
  
  Auston Bunsen
  
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- [**An overview of how basic access control systems work**](/content/guides/access-control-protocols/an-overview-of-how-basic-access-control-systems-work/index.html)
  
  We go through everything from Wiegand to NFC readers and everything in between. After reading this, you should have a high level understanding of how modern access control systems work.
  
  Auston Bunsen