diff --git a/fxbarcode/qrcode/BC_QRCoderBitVector.cpp b/fxbarcode/qrcode/BC_QRCoderBitVector.cpp
index def9221..cfe232e 100644
--- a/fxbarcode/qrcode/BC_QRCoderBitVector.cpp
+++ b/fxbarcode/qrcode/BC_QRCoderBitVector.cpp
@@ -79,14 +79,14 @@
   if (m_sizeInBits != other->Size())
     return false;
 
-  const auto* pOther = other->GetArray();
+  pdfium::span<const uint8_t> other_span = other->GetArray();
   for (size_t i = 0; i < sizeInBytes(); ++i)
-    m_array[i] ^= pOther[i];
+    m_array[i] ^= other_span[i];
   return true;
 }
 
-const uint8_t* CBC_QRCoderBitVector::GetArray() const {
-  return m_array.data();
+pdfium::span<const uint8_t> CBC_QRCoderBitVector::GetArray() const {
+  return m_array;
 }
 
 void CBC_QRCoderBitVector::AppendByte(int8_t value) {
diff --git a/fxbarcode/qrcode/BC_QRCoderBitVector.h b/fxbarcode/qrcode/BC_QRCoderBitVector.h
index f2e7e2a..f641e83 100644
--- a/fxbarcode/qrcode/BC_QRCoderBitVector.h
+++ b/fxbarcode/qrcode/BC_QRCoderBitVector.h
@@ -11,13 +11,14 @@
 #include <stdint.h>
 
 #include "core/fxcrt/data_vector.h"
+#include "third_party/base/span.h"
 
 class CBC_QRCoderBitVector {
  public:
   CBC_QRCoderBitVector();
   ~CBC_QRCoderBitVector();
 
-  const uint8_t* GetArray() const;
+  pdfium::span<const uint8_t> GetArray() const;
   int32_t At(size_t index) const;
   size_t Size() const;
   size_t sizeInBytes() const;
diff --git a/fxbarcode/qrcode/BC_QRCoderEncoder.cpp b/fxbarcode/qrcode/BC_QRCoderEncoder.cpp
index 46aa0a3..b209fae 100644
--- a/fxbarcode/qrcode/BC_QRCoderEncoder.cpp
+++ b/fxbarcode/qrcode/BC_QRCoderEncoder.cpp
@@ -31,6 +31,7 @@
 
 #include "core/fxcrt/data_vector.h"
 #include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/span_util.h"
 #include "fxbarcode/common/BC_CommonByteMatrix.h"
 #include "fxbarcode/common/reedsolomon/BC_ReedSolomon.h"
 #include "fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
@@ -320,8 +321,9 @@
       return false;
 
     DataVector<uint8_t> dataBytes(numDataBytesInBlock);
-    memcpy(dataBytes.data(), bits->GetArray() + dataBytesOffset,
-           numDataBytesInBlock);
+    fxcrt::spancpy(
+        pdfium::make_span(dataBytes),
+        bits->GetArray().subspan(dataBytesOffset, numDataBytesInBlock));
     DataVector<uint8_t> ecBytes = GenerateECBytes(dataBytes, numEcBytesInBlock);
     if (ecBytes.empty())
       return false;