diff --git a/include/E57SimpleReader.h b/include/E57SimpleReader.h
index d2fb2e3..f795567 100644
--- a/include/E57SimpleReader.h
+++ b/include/E57SimpleReader.h
@@ -35,15 +35,26 @@
 
 namespace e57
 {
+   struct E57_DLL ReaderOptions
+   {
+      //! Set how frequently to verify the checksums (see ReadChecksumPolicy).
+      ReadChecksumPolicy checksumPolicy = CHECKSUM_POLICY_ALL;
+   };
 
    //! @brief Used for reading of the E57 file with E57 Simple API
    class E57_DLL Reader
    {
    public:
       //! @brief This function is the constructor for the reader class
-      //! @param [in] filePath file path to E57 file
+      //! @param [in] filePath Path to E57 file
+      [[deprecated( "Will be removed in 4.0. Use Reader( ustring, ReaderOptions )." )]] // TODO Remove in 4.0
       explicit Reader( const ustring &filePath );
 
+      //! @brief This function is the constructor for the reader class
+      //! @param [in] filePath Path to E57 file
+      //! @param [in] options Options to be used for the file
+      Reader( const ustring &filePath, const ReaderOptions &options );
+
       //! @brief This function returns true if the file is open
       bool IsOpen() const;
 
diff --git a/src/E57SimpleReader.cpp b/src/E57SimpleReader.cpp
index b2ca220..4fbd0a7 100644
--- a/src/E57SimpleReader.cpp
+++ b/src/E57SimpleReader.cpp
@@ -31,7 +31,13 @@
 namespace e57
 {
 
-   Reader::Reader( const ustring &filePath ) : impl_( new ReaderImpl( filePath ) )
+   // Note that this constructor is deprecated (see header).
+   Reader::Reader( const ustring &filePath ) : Reader( filePath, {} )
+   {
+   }
+
+   Reader::Reader( const ustring &filePath, const ReaderOptions &options ) :
+      impl_( new ReaderImpl( filePath, options ) )
    {
    }
 
diff --git a/src/ReaderImpl.cpp b/src/ReaderImpl.cpp
index f84b584..ec7fa0a 100644
--- a/src/ReaderImpl.cpp
+++ b/src/ReaderImpl.cpp
@@ -30,8 +30,8 @@
 namespace e57
 {
 
-   ReaderImpl::ReaderImpl( const ustring &filePath ) :
-      imf_( filePath, "r" ), root_( imf_.root() ), data3D_( root_.get( "/data3D" ) ),
+   ReaderImpl::ReaderImpl( const ustring &filePath, const ReaderOptions &options ) :
+      imf_( filePath, "r", options.checksumPolicy ), root_( imf_.root() ), data3D_( root_.get( "/data3D" ) ),
       images2D_( root_.isDefined( "/images2D" ) ? root_.get( "/images2D" ) : VectorNode( imf_ ) )
    {
    }
diff --git a/src/ReaderImpl.h b/src/ReaderImpl.h
index 6399084..1324f6b 100644
--- a/src/ReaderImpl.h
+++ b/src/ReaderImpl.h
@@ -28,6 +28,7 @@
 #pragma once
 
 #include "E57SimpleData.h"
+#include "E57SimpleReader.h"
 
 namespace e57
 {
@@ -36,7 +37,7 @@ namespace e57
    class ReaderImpl
    {
    public:
-      explicit ReaderImpl( const ustring &filePath );
+      explicit ReaderImpl( const ustring &filePath, const ReaderOptions &options );
 
       ~ReaderImpl();
 
diff --git a/test/src/test_SimpleReader.cpp b/test/src/test_SimpleReader.cpp
index 3fc099d..4144ec9 100644
--- a/test/src/test_SimpleReader.cpp
+++ b/test/src/test_SimpleReader.cpp
@@ -23,14 +23,14 @@ namespace
 
 TEST( SimpleReader, PathError )
 {
-   E57_ASSERT_THROW( e57::Reader( "./no-path/empty.e57" ) );
+   E57_ASSERT_THROW( e57::Reader( "./no-path/empty.e57", {} ) );
 }
 
 TEST( SimpleReaderData, ReadEmpty )
 {
    e57::Reader *reader = nullptr;
 
-   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/self/empty.e57" ) );
+   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/self/empty.e57", {} ) );
 
    ASSERT_TRUE( reader->IsOpen() );
    EXPECT_EQ( reader->GetImage2DCount(), 0 );
@@ -47,7 +47,12 @@ TEST( SimpleReaderData, ReadEmpty )
 
 TEST( SimpleReaderData, BadCRC )
 {
-   E57_ASSERT_THROW( e57::Reader( TestData::Path() + "/self/bad-crc.e57" ) );
+   E57_ASSERT_THROW( e57::Reader( TestData::Path() + "/self/bad-crc.e57", {} ) );
+}
+
+TEST( SimpleReaderData, DoNotCheckCRC )
+{
+   E57_ASSERT_NO_THROW( e57::Reader( TestData::Path() + "/self/bad-crc.e57", { e57::CHECKSUM_POLICY_NONE } ) );
 }
 
 // https://github.com/asmaloney/libE57Format/issues/26
@@ -55,7 +60,7 @@ TEST( SimpleReaderData, BadCRC )
 TEST( SimpleReaderData, ReadChineseFileName )
 {
    E57_ASSERT_NO_THROW(
-      e57::Reader( TestData::Path() + "/self/\xe6\xb5\x8b\xe8\xaf\x95\xe7\x82\xb9\xe4\xba\x91.e57" ) );
+      e57::Reader( TestData::Path() + "/self/\xe6\xb5\x8b\xe8\xaf\x95\xe7\x82\xb9\xe4\xba\x91.e57", {} ) );
 }
 
 // https://github.com/asmaloney/libE57Format/issues/69
@@ -64,14 +69,14 @@ TEST( SimpleReaderData, ReadChineseFileName )
 // TEST( SimpleReaderData, ReadUmlautFileName )
 //{
 //   E57_ASSERT_NO_THROW(
-//      e57::Reader( TestData::Path() + "/self/test filename \x61\xcc\x88\x6f\xcc\x88\x75\xcc\x88.e57" ) );
+//      e57::Reader( TestData::Path() + "/self/test filename \x61\xcc\x88\x6f\xcc\x88\x75\xcc\x88.e57", {} ) );
 //}
 
 TEST( SimpleReaderData, ReadBunnyDouble )
 {
    e57::Reader *reader = nullptr;
 
-   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/reference/bunnyDouble.e57" ) );
+   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/reference/bunnyDouble.e57", {} ) );
 
    ASSERT_TRUE( reader->IsOpen() );
    EXPECT_EQ( reader->GetImage2DCount(), 0 );
@@ -115,7 +120,7 @@ TEST( SimpleReaderData, ReadBunnyInt32 )
 {
    e57::Reader *reader = nullptr;
 
-   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/reference/bunnyInt32.e57" ) );
+   E57_ASSERT_NO_THROW( reader = new e57::Reader( TestData::Path() + "/reference/bunnyInt32.e57", {} ) );
 
    ASSERT_TRUE( reader->IsOpen() );
    EXPECT_EQ( reader->GetImage2DCount(), 0 );