User's Manual

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ACR122U NFC Reader
2.2.2 Enabling PCSC Escape Command
1. To use the product, you need to
enable the PCSC Escape Command.
This can be done by modifying the
Registry Settings of the Device after it
has been successful installed.
Run “RegEdit” in the “Run Command
Menu” of Windows
2. Add a DWORD
“EscapeCommandEnable” under
HKey_Local_Machine\SYSTEM\Current
ControlSet\Enum\USB\Vid_072F&Pid_2
200\Device Parameters
3. Look for: VID_072F&PID_2200
Then expand the node. This will list the
USB port where you have plugged the
reader. Choose one port. Look under
Device parameters
Page 7 of 18
ACR122U NFC Reader SDK User Manual
Version 1.7 October 2008