diff --git a/src/ReadPort_PCA9655E.cpp b/src/ReadPort_PCA9655E.cpp
index a4c180c..d83fb82 100644
--- a/src/ReadPort_PCA9655E.cpp
+++ b/src/ReadPort_PCA9655E.cpp
@@ -27,4 +27,9 @@ void ReadPort_PCA9655E::read()
     Wire.requestFrom(port.ADDR, 1u);            //request one byte from input port
 
     portState = Wire.read();
+/*if (portState)//todo
+{
+    Keyboard.print(" portState=");
+    Keyboard.print(portState);
+}*/
 }
diff --git a/src/Scanner_Port.cpp b/src/Scanner_Port.cpp
index 62e94af..20a3542 100644
--- a/src/Scanner_Port.cpp
+++ b/src/Scanner_Port.cpp
@@ -2,14 +2,14 @@
 /*
 Strobes the row and reads the columns.
 */
-ReadPort* const Scanner_Port::scan()
+uint8_t Scanner_Port::scan()
 {
     //strobe row on
-    if (STROBE_ON == LOW)
+    if (STROBE_ON == LOW)                       //if activeLow
     {
         refStrobePort.setActivePinLow(strobePin);
     }
-    else //activeLow
+    else                                        //if activeHigh
     {
         refStrobePort.setActivePinHigh(strobePin);
     }
@@ -19,14 +19,14 @@ ReadPort* const Scanner_Port::scan()
     refReadPort.read();
 
     //strobe row off
-    if (STROBE_ON == LOW)
+    if (STROBE_ON == LOW)                       //if activeLow
     {
         refStrobePort.setActivePinHigh(strobePin);
     }
-    else //activeLow
+    else                                        //if activeHigh
     {
         refStrobePort.setActivePinLow(strobePin);
     }
    
-    return &refReadPort;
+    return refReadPort.getPortState();
 }
diff --git a/src/Scanner_Port.h b/src/Scanner_Port.h
index 8703cfc..25049ea 100644
--- a/src/Scanner_Port.h
+++ b/src/Scanner_Port.h
@@ -18,6 +18,6 @@ class Scanner_Port
     public:
         Scanner_Port(StrobePort &refStrobePort, const uint8_t strobePin, ReadPort& refReadPort)
             : refStrobePort(refStrobePort), strobePin(strobePin), refReadPort(refReadPort) {}
-        virtual ReadPort* const scan();
+        uint8_t scan();
 };
 #endif