diff --git a/slsReceiverSoftware/include/GeneralData.h b/slsReceiverSoftware/include/GeneralData.h
index dcf335bf8..d4fa76679 100644
--- a/slsReceiverSoftware/include/GeneralData.h
+++ b/slsReceiverSoftware/include/GeneralData.h
@@ -10,6 +10,7 @@
 #include "sls_receiver_defs.h"
 #include "receiver_defs.h"
 
+#define NUM_BITS_IN_ONE_BYTE 8
 
 class GeneralData {
 	
@@ -171,6 +172,15 @@ public:
 		bprintf(RED,"This is a generic function that should be overloaded by a derived class\n");
 	};
 
+	/**
+	 * Enable Gap Pixels changes member variables
+	 * @param enable true if gap pixels enable, else false
+	 */
+	virtual void SetGapPixelsEnable(bool b, int dr) {
+		bprintf(RED,"This is a generic function that should be overloaded by a derived class\n");
+	};
+
+
 	/**
 	 * Print all variables
 	 */
@@ -544,6 +554,26 @@ class EigerData : public GeneralData {
 		imageSize 		= dataSize*packetsPerFrame;
 	};
 
+	/**
+	 * Enable Gap Pixels changes member variables
+	 * @param enable true if gap pixels enable, else false
+	 */
+	void SetGapPixelsEnable(bool b, int dr) {
+		switch((int)b) {
+		case 1:
+			nPixelsX_Streamer 			= (256*2) + 3;
+			nPixelsY_Streamer 			= 256 + 1;
+			imageSize_Streamer			= nPixelsX_Streamer * imageSize_Streamer *
+											((double)dr/(double)NUM_BITS_IN_ONE_BYTE);
+			break;
+		default:
+			nPixelsX_Streamer 			= (256*2);
+			nPixelsY_Streamer 			= 256;
+			imageSize_Streamer			= dataSize*packetsPerFrame;
+			break;
+		}
+	};
+
 
 };
 
diff --git a/slsReceiverSoftware/include/UDPBaseImplementation.h b/slsReceiverSoftware/include/UDPBaseImplementation.h
index f5af43d68..8e4a54b6b 100644
--- a/slsReceiverSoftware/include/UDPBaseImplementation.h
+++ b/slsReceiverSoftware/include/UDPBaseImplementation.h
@@ -66,6 +66,12 @@ class UDPBaseImplementation : protected virtual slsReceiverDefs, public UDPInter
 	 */
 	int getFlippedData(int axis=0) const;
 
+	/**
+	 * Get Gap Pixels Enable (eiger specific)
+	 * @return true if gap pixels enabled, else false
+	 */
+	bool getGapPixelsEnable() const;
+
 
 	//***file parameters***
 	/**
@@ -284,6 +290,13 @@ class UDPBaseImplementation : protected virtual slsReceiverDefs, public UDPInter
 	 */
 	void setFlippedData(int axis=0, int enable=-1);
 
+	/**
+	 * Set Gap Pixels Enable (eiger specific)
+	 * @param b true for gap pixels enable, else false
+	 * @return OK or FAIL
+	 */
+	int setGapPixelsEnable(const bool b);
+
 
 	//***file parameters***
 	/**
@@ -609,6 +622,8 @@ class UDPBaseImplementation : protected virtual slsReceiverDefs, public UDPInter
 	uint32_t fifoDepth;
 	/** enable for flipping data across both axes */
 	int flippedData[2];
+	/** gap pixels enable */
+	bool gapPixelsEnable;
 
 	//***receiver parameters***
 	/** Maximum Number of Listening Threads/ UDP Ports */
diff --git a/slsReceiverSoftware/include/UDPInterface.h b/slsReceiverSoftware/include/UDPInterface.h
index 3e48d765f..d12b60032 100644
--- a/slsReceiverSoftware/include/UDPInterface.h
+++ b/slsReceiverSoftware/include/UDPInterface.h
@@ -48,6 +48,7 @@ class UDPInterface {
 	 *	-setFlippedData (if eiger)
 	 *	-setActivate (if eiger)
 	 *	-setTenGigaEnable (if eiger)
+	 *	-setGapPixelsEnable
 	 *	-setStreamingPort
 	 *	-setStreamingSourceIP
 	 *	-setDataStreamEnable
@@ -151,6 +152,12 @@ class UDPInterface {
 	 */
 	virtual int getFlippedData(int axis=0) const = 0;
 
+	/**
+	 * Get Gap Pixels Enable (eiger specific)
+	 * @return true if gap pixels enabled, else false
+	 */
+	virtual bool getGapPixelsEnable() const = 0;
+
 
 	//***file parameters***
 	/**
@@ -370,6 +377,14 @@ class UDPInterface {
 	virtual void setFlippedData(int axis=0, int enable=-1) = 0;
 
 
+	/**
+	 * Set Gap Pixels Enable (eiger specific)
+	 * @param b true for gap pixels enable, else false
+	 * @return OK or FAIL
+	 */
+	virtual int setGapPixelsEnable(const bool b) = 0;
+
+
 	//***file parameters***
 	/**
 	 * Set File Format
diff --git a/slsReceiverSoftware/include/UDPStandardImplementation.h b/slsReceiverSoftware/include/UDPStandardImplementation.h
index a5fe533ab..4136f91f2 100644
--- a/slsReceiverSoftware/include/UDPStandardImplementation.h
+++ b/slsReceiverSoftware/include/UDPStandardImplementation.h
@@ -53,6 +53,13 @@ class UDPStandardImplementation: private virtual slsReceiverDefs, public UDPBase
 	 */
 	int64_t getAcquisitionIndex() const;
 
+	/**
+	 * Set Gap Pixels Enable (eiger specific)
+	 * @param b true for gap pixels enable, else false
+	 * @return OK or FAIL
+	 */
+	int setGapPixelsEnable(const bool b);
+
 	/**
 	 * Set File Format
 	 * @param f fileformat binary or hdf5
diff --git a/slsReceiverSoftware/include/slsReceiverTCPIPInterface.h b/slsReceiverSoftware/include/slsReceiverTCPIPInterface.h
index aa44f00ad..885c7ef90 100644
--- a/slsReceiverSoftware/include/slsReceiverTCPIPInterface.h
+++ b/slsReceiverSoftware/include/slsReceiverTCPIPInterface.h
@@ -261,6 +261,9 @@ class slsReceiverTCPIPInterface : private virtual slsReceiverDefs {
 	/** set streaming source ip */
 	int set_streaming_source_ip();
 
+	/** enable gap pixels */
+	int enable_gap_pixels();
+
 
 
 	/** detector type */
diff --git a/slsReceiverSoftware/include/sls_receiver_funcs.h b/slsReceiverSoftware/include/sls_receiver_funcs.h
index 48d41679f..cd29bfe8c 100644
--- a/slsReceiverSoftware/include/sls_receiver_funcs.h
+++ b/slsReceiverSoftware/include/sls_receiver_funcs.h
@@ -60,6 +60,7 @@ enum recFuncs{
 	F_SEND_RECEIVER_MULTIDETSIZE,    /** < sets the multi detector size to the receiver */
 	F_SET_RECEIVER_STREAMING_PORT, 	/** < sets the receiver streaming port */
 	F_RECEIVER_STREAMING_SRC_IP,	/** < sets the receiver streaming source IP */
+	F_ENABLE_GAPPIXELS_IN_RECEIVER,	/** < sets gap pixels in the receiver */
 	/* Always append functions hereafter!!! */
 
 
diff --git a/slsReceiverSoftware/src/UDPBaseImplementation.cpp b/slsReceiverSoftware/src/UDPBaseImplementation.cpp
index 5fbb5d00e..ae29ae7f3 100644
--- a/slsReceiverSoftware/src/UDPBaseImplementation.cpp
+++ b/slsReceiverSoftware/src/UDPBaseImplementation.cpp
@@ -53,6 +53,7 @@ void UDPBaseImplementation::initializeMembers(){
 	fifoDepth = 0;
 	flippedData[0] = 0;
 	flippedData[1] = 0;
+	gapPixelsEnable = false;
 
 	//***receiver parameters***
 	status = IDLE;
@@ -115,6 +116,10 @@ int UDPBaseImplementation::getFlippedData(int axis) const{
 	return flippedData[axis];
 }
 
+bool UDPBaseImplementation::getGapPixelsEnable() const {
+	FILE_LOG(logDEBUG) << __AT__ << " starting";
+	return gapPixelsEnable;
+}
 
 /***file parameters***/
 slsReceiverDefs::fileFormat UDPBaseImplementation::getFileFormat() const{	FILE_LOG(logDEBUG) << __AT__ << " starting";	return fileFormatType;}
@@ -255,6 +260,14 @@ void UDPBaseImplementation::setFlippedData(int axis, int enable){
 	FILE_LOG(logINFO)  << "Flipped Data: " << flippedData[0] << " , " << flippedData[1];
 }
 
+int UDPBaseImplementation::setGapPixelsEnable(const bool b) {
+	FILE_LOG(logDEBUG) << __AT__ << " starting";
+	gapPixelsEnable = b;
+	FILE_LOG(logINFO)  << "Gap Pixels Enable: " << gapPixelsEnable;
+
+	// overridden
+	return OK;
+}
 
 /***file parameters***/
 void UDPBaseImplementation::setFileFormat(const fileFormat f){
diff --git a/slsReceiverSoftware/src/UDPStandardImplementation.cpp b/slsReceiverSoftware/src/UDPStandardImplementation.cpp
index 16b68067c..46a1985e4 100644
--- a/slsReceiverSoftware/src/UDPStandardImplementation.cpp
+++ b/slsReceiverSoftware/src/UDPStandardImplementation.cpp
@@ -112,6 +112,21 @@ int64_t UDPStandardImplementation::getAcquisitionIndex() const {
 }
 
 
+int UDPStandardImplementation::setGapPixelsEnable(const bool b) {
+	if (gapPixelsEnable != b) {
+		gapPixelsEnable = b;
+
+		// side effects
+
+		numberofJobs = -1; //changes to imagesize has to be noted to recreate fifo structure
+		if (SetupFifoStructure() == FAIL)
+			return FAIL;
+	}
+	FILE_LOG(logINFO)  << "Gap Pixels Enable: " << gapPixelsEnable;
+	return OK;
+}
+
+
 void UDPStandardImplementation::setFileFormat(const fileFormat f){
 	switch(f){
 #ifdef HDF5C
diff --git a/slsReceiverSoftware/src/slsReceiverTCPIPInterface.cpp b/slsReceiverSoftware/src/slsReceiverTCPIPInterface.cpp
index f7e31472f..647c60342 100644
--- a/slsReceiverSoftware/src/slsReceiverTCPIPInterface.cpp
+++ b/slsReceiverSoftware/src/slsReceiverTCPIPInterface.cpp
@@ -280,6 +280,7 @@ const char* slsReceiverTCPIPInterface::getFunctionName(enum recFuncs func) {
 	case F_SEND_RECEIVER_DETPOSID:		return "F_SEND_RECEIVER_DETPOSID";
 	case F_SEND_RECEIVER_MULTIDETSIZE:  return "F_SEND_RECEIVER_MULTIDETSIZE";
 	case F_RECEIVER_STREAMING_SRC_IP: 	return "F_RECEIVER_STREAMING_SRC_IP";
+	case F_ENABLE_GAPPIXELS_IN_RECEIVER:return "F_ENABLE_GAPPIXELS_IN_RECEIVER";
 
 	default:							return "Unknown Function";
 	}
@@ -326,6 +327,7 @@ int slsReceiverTCPIPInterface::function_table(){
 	flist[F_SEND_RECEIVER_MULTIDETSIZE]		= 	&slsReceiverTCPIPInterface::set_multi_detector_size;
 	flist[F_SET_RECEIVER_STREAMING_PORT]	= 	&slsReceiverTCPIPInterface::set_streaming_port;
 	flist[F_RECEIVER_STREAMING_SRC_IP]		= 	&slsReceiverTCPIPInterface::set_streaming_source_ip;
+	flist[F_ENABLE_GAPPIXELS_IN_RECEIVER]	=	&slsReceiverTCPIPInterface::enable_gap_pixels;
 #ifdef VERYVERBOSE
 	for (int i = 0; i < NUM_REC_FUNCTIONS ; i++) {
 		FILE_LOG(logINFO) << "function fnum: " << i << " (" << getFunctionName((enum recFuncs)i) << ") located at " << (unsigned int)flist[i];
@@ -687,6 +689,11 @@ int slsReceiverTCPIPInterface::send_update() {
 	if (path != NULL)
 		delete[] path;
 
+	// gap pixels enable
+#ifdef SLS_RECEIVER_UDP_FUNCTIONS
+	ind = (int)receiverBase->getGapPixelsEnable();
+#endif
+	mySock->SendDataOnly(&ind,sizeof(ind));
 
 	if (!lockStatus)
 		strcpy(mySock->lastClientIP,mySock->thisClientIP);
@@ -2367,3 +2374,63 @@ int slsReceiverTCPIPInterface::set_streaming_source_ip() {
 	// return ok/fail
 	return ret;
 }
+
+
+
+
+
+int slsReceiverTCPIPInterface::enable_gap_pixels() {
+	ret = OK;
+	memset(mess, 0, sizeof(mess));
+	int enable = -1;
+	int retval = -1;
+
+	// receive arguments
+	if (mySock->ReceiveDataOnly(&enable,sizeof(enable)) < 0 )
+		return printSocketReadError();
+
+	if (myDetectorType != EIGER)
+		functionNotImplemented();
+
+	// execute action
+#ifdef SLS_RECEIVER_UDP_FUNCTIONS
+	else {
+		if (receiverBase == NULL)
+			invalidReceiverObject();
+		else {
+			// set
+			if(enable >= 0) {
+				if (mySock->differentClients && lockStatus)
+					receiverlocked();
+				else if (receiverBase->getStatus() != IDLE)
+					receiverNotIdle();
+				else {
+					receiverBase->setGapPixelsEnable(enable);
+				}
+			}
+			//get
+			retval = receiverBase->getGapPixelsEnable();
+			if(enable >= 0 && retval != enable){
+				ret = FAIL;
+				sprintf(mess,"Could not set gap pixels to %d, returned %d\n",enable,retval);
+				FILE_LOG(logERROR) << "Warning: " << mess;
+			}
+		}
+	}
+#endif
+#ifdef VERYVERBOSE
+	FILE_LOG(logDEBUG1) << "Activate: " << retval;
+#endif
+
+	if (ret == OK && mySock->differentClients)
+		ret = FORCE_UPDATE;
+
+	// send answer
+	mySock->SendDataOnly(&ret,sizeof(ret));
+	if (ret == FAIL)
+		mySock->SendDataOnly(mess,sizeof(mess));
+	mySock->SendDataOnly(&retval,sizeof(retval));
+
+	// return ok/fail
+	return ret;
+}