diff --git a/Detectors/Upgrades/ALICE3/IOTOF/base/include/IOTOFBase/IOTOFBaseParam.h b/Detectors/Upgrades/ALICE3/IOTOF/base/include/IOTOFBase/IOTOFBaseParam.h
index 7d3dbdc1bd1dc..f81f3f9484475 100644
--- a/Detectors/Upgrades/ALICE3/IOTOF/base/include/IOTOFBase/IOTOFBaseParam.h
+++ b/Detectors/Upgrades/ALICE3/IOTOF/base/include/IOTOFBase/IOTOFBaseParam.h
@@ -28,6 +28,8 @@ struct ChipSpecifics {
   float PassiveEdgeReadOut = 0.;
   float PassiveEdgeTop = 0.;
   float PassiveEdgeSide = 0.;
+  float PixelPassiveEdgeX = 0.;
+  float PixelPassiveEdgeZ = 0.;
   float SensorLayerThicknessEff = 0.;
   float SensorLayerThickness = 0.;
 
@@ -45,6 +47,11 @@ struct ITOFChipSpecifics : ChipSpecifics {
     NRows = 271;
     PitchCol = 250.00e-4;
     PitchRow = 100.00e-4;
+    PassiveEdgeReadOut = 0.;
+    PassiveEdgeTop = 0.;
+    PassiveEdgeSide = 0.;
+    PixelPassiveEdgeX = 0.;
+    PixelPassiveEdgeZ = 0.;
     SensorLayerThicknessEff = 50.e-4;
     SensorLayerThickness = 50.e-4;
   }
@@ -59,6 +66,9 @@ struct OTOFChipSpecifics : ChipSpecifics {
     PitchRow = 100.00e-4;
     PassiveEdgeTop = 50.e-4;
     PassiveEdgeSide = 115.8e-4;
+    PassiveEdgeReadOut = 50.e-4;
+    PixelPassiveEdgeX = 0.;
+    PixelPassiveEdgeZ = 0.;
     SensorLayerThicknessEff = 50.e-4;
     SensorLayerThickness = 50.e-4;
   }
diff --git a/Detectors/Upgrades/ALICE3/IOTOF/base/src/IOTOFBaseLinkDef.h b/Detectors/Upgrades/ALICE3/IOTOF/base/src/IOTOFBaseLinkDef.h
index 5cbff299d78c1..e83f4fb51b130 100644
--- a/Detectors/Upgrades/ALICE3/IOTOF/base/src/IOTOFBaseLinkDef.h
+++ b/Detectors/Upgrades/ALICE3/IOTOF/base/src/IOTOFBaseLinkDef.h
@@ -15,8 +15,8 @@
 #pragma link off all classes;
 #pragma link off all functions;
 
-#pragma link C++ class o2::iotof::GeometryTGeo +
+#pragma link C++ class o2::iotof::GeometryTGeo + ;
 #pragma link C++ class o2::iotof::IOTOFBaseParam + ;
 #pragma link C++ class o2::conf::ConfigurableParamHelper < o2::iotof::IOTOFBaseParam> + ;
 
-#endif
\ No newline at end of file
+#endif
diff --git a/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h b/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h
index cd0ab55bd03d7..4425676b5fdcb 100644
--- a/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h
+++ b/Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Segmentation.h
@@ -42,7 +42,7 @@ class Segmentation
   ~Segmentation() = default;
 
   void configChip(const int nCols, const int nRows, const float pitchCol, const float pitchRow, const float passiveEdgeReadOut, const float passiveEdgeTop,
-                  const float passiveEdgeSide, const float sensorLayerThicknessEff, const float sensorLayerThickness, const int subDetectorID);
+                  const float passiveEdgeSide, const float PixelPassiveEdgeX, const float PixelPassiveEdgeZ, const float sensorLayerThicknessEff, const float sensorLayerThickness, const int subDetectorID);
   void configChip(const ChipSpecifics& specsConfig, const int subDetectorID);
 
   /// Transformation from Geant detector centered local coordinates (cm) to
@@ -181,6 +181,11 @@ inline void Segmentation::localToDetectorUnchecked(float xRow, float zCol, int&
   zCol += 0.5 * specsConfig.ActiveMatrixSizeCols();                                                                       // coordinate wrt left edge of Active matrix
   iRow = int(xRow / specsConfig.PitchRow);
   iCol = int(zCol / specsConfig.PitchCol);
+  // check pixel passive region
+  if (std::abs(xRow - (iRow + 0.5) * specsConfig.PitchRow) > (0.5 * specsConfig.PitchRow - specsConfig.PixelPassiveEdgeX) || std::abs(zCol - (iCol + 0.5) * specsConfig.PitchCol) > (0.5 * specsConfig.PitchCol - specsConfig.PixelPassiveEdgeZ)) {
+    iRow = iCol = -1;
+    return;
+  }
   if (xRow < 0) {
     iRow -= 1;
   }
@@ -206,6 +211,11 @@ inline bool Segmentation::localToDetector(float xRow, float zCol, int& iRow, int
   }
   iRow = int(xRow / specsConfig.PitchRow);
   iCol = int(zCol / specsConfig.PitchCol);
+  // check pixel passive region
+  if (std::abs(xRow - (iRow + 0.5) * specsConfig.PitchRow) > (0.5 * specsConfig.PitchRow - specsConfig.PixelPassiveEdgeX) || std::abs(zCol - (iCol + 0.5) * specsConfig.PitchCol) > (0.5 * specsConfig.PitchCol - specsConfig.PixelPassiveEdgeZ)) {
+    iRow = iCol = -1;
+    return false;
+  }
   return true;
 }
 
diff --git a/Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Segmentation.cxx b/Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Segmentation.cxx
index ea03b3d317cdc..6e4624294a60e 100644
--- a/Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Segmentation.cxx
+++ b/Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Segmentation.cxx
@@ -39,8 +39,8 @@ Segmentation::Segmentation()
   } else {
     auto& itofPars = ITOFChipSpecificParam::Instance();
     auto& otofPars = OTOFChipSpecificParam::Instance();
-    const ChipSpecifics mITofChipPars(itofPars.NCols, itofPars.NRows, itofPars.PitchCol, itofPars.PitchRow, itofPars.PassiveEdgeReadOut, itofPars.PassiveEdgeTop, itofPars.PassiveEdgeSide, itofPars.SensorLayerThicknessEff, itofPars.SensorLayerThickness);
-    const ChipSpecifics mOTofChipPars(otofPars.NCols, otofPars.NRows, otofPars.PitchCol, otofPars.PitchRow, otofPars.PassiveEdgeReadOut, otofPars.PassiveEdgeTop, otofPars.PassiveEdgeSide, otofPars.SensorLayerThicknessEff, otofPars.SensorLayerThickness);
+    const ChipSpecifics mITofChipPars(itofPars.NCols, itofPars.NRows, itofPars.PitchCol, itofPars.PitchRow, itofPars.PassiveEdgeReadOut, itofPars.PassiveEdgeTop, itofPars.PassiveEdgeSide, itofPars.PixelPassiveEdgeX, itofPars.PixelPassiveEdgeZ, itofPars.SensorLayerThicknessEff, itofPars.SensorLayerThickness);
+    const ChipSpecifics mOTofChipPars(otofPars.NCols, otofPars.NRows, otofPars.PitchCol, otofPars.PitchRow, otofPars.PassiveEdgeReadOut, otofPars.PassiveEdgeTop, otofPars.PassiveEdgeSide, otofPars.PixelPassiveEdgeX, otofPars.PixelPassiveEdgeZ, otofPars.SensorLayerThicknessEff, otofPars.SensorLayerThickness);
 
     configChip(mITofChipPars, 0 /* subDetectorID for iTOF */);
     configChip(mOTofChipPars, 1 /* subDetectorID for oTOF */);
@@ -48,12 +48,12 @@ Segmentation::Segmentation()
 }
 
 void Segmentation::configChip(const int nCols, const int nRows, const float pitchCol, const float pitchRow, const float passiveEdgeReadOut,
-                              const float passiveEdgeTop, const float passiveEdgeSide, const float sensorLayerThicknessEff, const float sensorLayerThickness, const int subDetectorID)
+                              const float passiveEdgeTop, const float passiveEdgeSide, const float pixelPassiveEdgeX, const float pixelPassiveEdgeZ, const float sensorLayerThicknessEff, const float sensorLayerThickness, const int subDetectorID)
 {
   if (subDetectorID == 0) {
-    mITofSpecsConfig = ChipSpecifics(nCols, nRows, pitchCol, pitchRow, passiveEdgeReadOut, passiveEdgeTop, passiveEdgeSide, sensorLayerThicknessEff, sensorLayerThickness);
+    mITofSpecsConfig = ChipSpecifics(nCols, nRows, pitchCol, pitchRow, passiveEdgeReadOut, passiveEdgeTop, passiveEdgeSide, pixelPassiveEdgeX, pixelPassiveEdgeZ, sensorLayerThicknessEff, sensorLayerThickness);
   } else if (subDetectorID == 1) {
-    mOTofSpecsConfig = ChipSpecifics(nCols, nRows, pitchCol, pitchRow, passiveEdgeReadOut, passiveEdgeTop, passiveEdgeSide, sensorLayerThicknessEff, sensorLayerThickness);
+    mOTofSpecsConfig = ChipSpecifics(nCols, nRows, pitchCol, pitchRow, passiveEdgeReadOut, passiveEdgeTop, passiveEdgeSide, pixelPassiveEdgeX, pixelPassiveEdgeZ, sensorLayerThicknessEff, sensorLayerThickness);
   } else {
     printf("Invalid subDetectorID %d. Must be 0 (iTOF) or 1 (oTOF). No configuration applied.\n", subDetectorID);
   }