diff --git a/classes/CFPropertyList/CFBinaryPropertyList.php b/classes/CFPropertyList/CFBinaryPropertyList.php
index e734088..34cb708 100644
--- a/classes/CFPropertyList/CFBinaryPropertyList.php
+++ b/classes/CFPropertyList/CFBinaryPropertyList.php
@@ -422,6 +422,10 @@ function readBinaryObject() {
       case '6': // unicode string (utf16be)
         $retval = $this->readBinaryUnicodeString($object_length);
         break;
+      case '8':
+        $num = $this->readBinaryInt($object_length);
+        $retval = new CFUid($num->getValue());
+        break;
       case 'a': // array
         $retval = $this->readBinaryArray($object_length);
         break;
@@ -892,6 +896,49 @@ protected function realToBinary($val) {
     return $bdata.strrev(pack("d", (float)$val));
   }
 
+  public function uidToBinary($value) {
+    $saved_object_count = $this->writtenObjectCount++;
+
+    $val = "";
+
+    $nbytes = 0;
+    if($value > 0xFF) $nbytes = 1; // 1 byte integer
+    if($value > 0xFFFF) $nbytes += 1; // 4 byte integer
+    if($value > 0xFFFFFFFF) $nbytes += 1; // 8 byte integer
+    if($value < 0) $nbytes = 3; // 8 byte integer, since signed
+
+    $bdata = self::typeBytes("1000", $nbytes); // 1 is 0001, type indicator for integer
+    $buff = "";
+
+    if($nbytes < 3) {
+      if($nbytes == 0) $fmt = "C";
+      elseif($nbytes == 1) $fmt = "n";
+      else $fmt = "N";
+
+      $buff = pack($fmt, $value);
+    }
+    else {
+      if(PHP_INT_SIZE > 4) {
+        // 64 bit signed integer; we need the higher and the lower 32 bit of the value
+        $high_word = $value >> 32;
+        $low_word = $value & 0xFFFFFFFF;
+      }
+      else {
+        // since PHP can only handle 32bit signed, we can only get 32bit signed values at this point - values above 0x7FFFFFFF are
+        // floats. So we ignore the existance of 64bit on non-64bit-machines
+        if($value < 0) $high_word = 0xFFFFFFFF;
+        else $high_word = 0;
+        $low_word = $value;
+      }
+      $buff = pack("N", $high_word).pack("N", $low_word);
+    }
+
+    $val = $bdata.$buff;
+
+    $this->objectTable[$saved_object_count] = $val;
+    return $saved_object_count;
+  }
+
   /**
    * Converts a numeric value to binary and adds it to the object table
    * @param numeric $value The numeric value
diff --git a/classes/CFPropertyList/CFPropertyList.php b/classes/CFPropertyList/CFPropertyList.php
index eff66fc..0e07b7c 100644
--- a/classes/CFPropertyList/CFPropertyList.php
+++ b/classes/CFPropertyList/CFPropertyList.php
@@ -319,6 +319,14 @@ protected function import(DOMNode $node, $parent) {
         case 'dict':
           $value = new $class();
           $this->import($n, $value);
+
+          if($value instanceof CFDictionary) {
+            $hsh = $value->getValue();
+            if(isset($hsh['CF$UID']) && count($hsh) == 1) {
+              $value = new CFUid($hsh['CF$UID']->getValue());
+            }
+          }
+
           break;
       }
 
diff --git a/classes/CFPropertyList/CFType.php b/classes/CFPropertyList/CFType.php
index a00337b..ba2e57a 100644
--- a/classes/CFPropertyList/CFType.php
+++ b/classes/CFPropertyList/CFType.php
@@ -121,6 +121,19 @@ public function toBinary(CFBinaryPropertyList &$bplist) {
   }
 }
 
+class CFUid extends CFType {
+  public
+  function toXML(DOMDocument $doc,$nodeName="") {
+    $obj = new CFDictionary(array('CF$UID' => new CFNumber($this->value)));
+    return $obj->toXml($doc);
+  }
+
+  public
+  function toBinary(CFBinaryPropertyList &$bplist) {
+    return $bplist->uidToBinary($this->value);
+  }
+}
+
 /**
  * Number Type of CFPropertyList
  * @author Rodney Rehm <rodney.rehm@medialize.de>
diff --git a/tests/BinaryParseTest.php b/tests/BinaryParseTest.php
index b24992d..d871716 100644
--- a/tests/BinaryParseTest.php
+++ b/tests/BinaryParseTest.php
@@ -11,6 +11,7 @@
 
 if(!defined('TEST_BINARY_DATA_FILE')) {
   define('TEST_BINARY_DATA_FILE',__DIR__.'/binary-data.plist');
+  define('TEST_UID_BPLIST', __DIR__ . '/uid-list.plist');
 }
 
 require_once(LIBDIR.'/CFPropertyList.php');
@@ -107,6 +108,15 @@ public function testInvalidString() {
     $this->fail('No exception thrown for invalid string!');
   }
 
+  public function testUidPlist() {
+    $plist = new CFPropertyList(TEST_UID_BPLIST);
+    $val = $plist->toArray();
+    $this->assertEquals(array('test' => 1), $val);
+
+    $v = $plist->getValue()->getValue();
+    $this->assertTrue($v['test'] instanceof CFUid);
+  }
+
 }
 
 # eof
diff --git a/tests/ParseXMLTest.php b/tests/ParseXMLTest.php
index 23649fc..4fde8db 100644
--- a/tests/ParseXMLTest.php
+++ b/tests/ParseXMLTest.php
@@ -11,6 +11,7 @@
 
 if(!defined('TEST_XML_DATA_FILE')) {
   define('TEST_XML_DATA_FILE',__DIR__.'/xml-data.plist');
+  define('TEST_UID_XML_PLIST', __DIR__ . '/uid-list.xml');
 }
 
 require_once(LIBDIR.'/CFPropertyList.php');
@@ -113,6 +114,13 @@ public function testInvalidString() {
     $this->fail('No exception thrown for invalid string!');
   }
 
+  public function testUidPlist() {
+    $plist = new CFPropertyList(TEST_UID_XML_PLIST);
+    $val = $plist->toArray();
+    $this->assertEquals(array('test' => 1), $val);
+    $v = $plist->getValue()->getValue();
+    $this->assertTrue($v['test'] instanceof CFUid);
+  }
 }
 
 # eof
diff --git a/tests/WriteBinaryTest.php b/tests/WriteBinaryTest.php
index 85cc2d7..473b6aa 100644
--- a/tests/WriteBinaryTest.php
+++ b/tests/WriteBinaryTest.php
@@ -11,6 +11,7 @@
 
 if(!defined('WRITE_BINARY_DATA_FILE')) {
   define('WRITE_BINARY_DATA_FILE',__DIR__.'/binary.plist');
+  define('TEST_UID_BPLIST', __DIR__ . '/uid-list.plist');
 }
 
 require_once(LIBDIR.'/CFPropertyList.php');
@@ -71,6 +72,15 @@ public function testWriteString() {
     $plist->parse($content);
   }
 
+  public function testWriteUid() {
+    $plist = new CFPropertyList();
+    $dict = new CFDictionary();
+    $dict->add('test', new CFUid(1));
+    $plist->add($dict);
+
+    $plist1 = new CFPropertyList(TEST_UID_BPLIST);
+    $this->assertEquals($plist1->toBinary(), $plist->toBinary());
+  }
 }
 
 
diff --git a/tests/WriteXMLTest.php b/tests/WriteXMLTest.php
index 782d29e..4029c6a 100644
--- a/tests/WriteXMLTest.php
+++ b/tests/WriteXMLTest.php
@@ -11,6 +11,7 @@
 
 if(!defined('WRITE_XML_DATA_FILE')) {
   define('WRITE_XML_DATA_FILE',__DIR__.'/binary.plist');
+  define('TEST_UID_XML_PLIST', __DIR__ . '/uid-list.xml');
 }
 
 require_once(LIBDIR.'/CFPropertyList.php');
@@ -68,6 +69,16 @@ public function testWriteString() {
     $plist->parse($content);
   }
 
+  public
+  function testWriteUid() {
+    $plist = new CFPropertyList();
+    $dict = new CFDictionary();
+    $dict->add('test', new CFUid(1));
+    $plist->add($dict);
+
+    $plist1 = new CFPropertyList(TEST_UID_XML_PLIST);
+    $this->assertEquals($plist1->toXml(), $plist->toXml());
+  }
 }
 
 
diff --git a/tests/uid-list.plist b/tests/uid-list.plist
new file mode 100644
index 0000000..4553e9f
Binary files /dev/null and b/tests/uid-list.plist differ
diff --git a/tests/uid-list.xml b/tests/uid-list.xml
new file mode 100644
index 0000000..3dc6edc
--- /dev/null
+++ b/tests/uid-list.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+  <dict>
+    <key>test</key>
+    <dict>
+      <key>CF$UID</key>
+      <integer>1</integer>
+    </dict>
+  </dict>
+</plist>