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2.0. Implementation
2.1. Communication Flow Chart of ACR122U
The Standard Microsoft CCID and PC/SC drivers are used; thus, no ACS drivers are required
because the drivers are already built inside the windows operating system. Your computer’s registry
settings can also be modified to be able to use the full capabilities of the ACR122U NFC Reader. See
Appendix A for more details.

Figure 1: Communication Flow Chart of ACR122U

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ACR122U – Application Programming Interface

Version 2.02