diff --git a/src/library/initialize/initialize_file_access.cpp b/src/library/initialize/initialize_file_access.cpp
index aed239a1b..c86a50dc8 100644
--- a/src/library/initialize/initialize_file_access.cpp
+++ b/src/library/initialize/initialize_file_access.cpp
@@ -36,6 +36,17 @@ IniAccess::IniAccess(const std::string file_path) : file_path_(file_path), ini_r
 }
 #endif
 
+std::vector<unsigned char> IniAccess::ReadVectorUnsignedChar(const char* section_name, const char* key_name, const size_t num)
+{
+  std::vector<unsigned char> data;
+  for (size_t i = 0; i < num; i++) {
+    std::stringstream edited_key_name;
+    edited_key_name << key_name << "(" << i << ")";
+    data.push_back((unsigned char)ReadInt(section_name, edited_key_name.str().c_str()));
+  }
+  return data;
+}
+
 double IniAccess::ReadDouble(const char* section_name, const char* key_name) {
 #ifdef WIN32
   std::stringstream value;
diff --git a/src/library/initialize/initialize_file_access.hpp b/src/library/initialize/initialize_file_access.hpp
index e88104338..1d1025fc4 100644
--- a/src/library/initialize/initialize_file_access.hpp
+++ b/src/library/initialize/initialize_file_access.hpp
@@ -41,6 +41,15 @@ class IniAccess {
   IniAccess(const std::string file_path);
 
   // Read functions
+  /**
+   * @fn ReadVectorUnsignedChar
+   * @brief Read a vector number as unsigned char type
+   * @param[in] section_name: Section name
+   * @param[in] key_name: Key name
+   * @param[in] num: Number of elements of the array
+   * @return Read number
+   */
+  std::vector<unsigned char> ReadVectorUnsignedChar(const char* section_name, const char* key_name, const size_t num);
   /**
    * @fn ReadDouble
    * @brief Read a scalar number as double type