diff --git a/.gitignore b/.gitignore
index c79a014..86c174c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,10 @@ debug/
 # Temporary directory with snapshots taken during test runs
 tests/snapshots-tmp/
 
+# manual-tests
+manual-tests/foo*
+manual-tests/gnupg
+
 # Unit tests and code coverage
 unit-tests/build/
 unit-tests/coverage/
diff --git a/manual-tests/manual.sh b/manual-tests/manual.sh
new file mode 100755
index 0000000..d81eb33
--- /dev/null
+++ b/manual-tests/manual.sh
@@ -0,0 +1,190 @@
+#!/bin/bash
+#
+# script to check OpenPGP Application features
+#
+
+exeName=$(readlink "$0")
+[[ -z ${exeName} ]] && exeName=$0
+dirName=$(dirname "${exeName}")
+
+gnupg_home_dir="$(realpath "${dirName}/gnupg")"
+
+VERBOSE=false
+
+#===============================================================================
+#
+#     help - Prints script help and usage
+#
+#===============================================================================
+# shellcheck disable=SC2154  # var is referenced but not assigned
+help() {
+  echo
+  echo "Usage: ${exeName} <options>"
+  echo
+  echo "Options:"
+  echo
+  echo "  -c <init|card|encrypt|decryptsign|verify>  : Requested command"
+  echo "  -v     : Verbose mode"
+  echo "  -h     : Displays this help"
+  echo
+  exit 1
+}
+
+#===============================================================================
+#
+#     kill_process - Kill running process, ensure clear next operation
+#
+#===============================================================================
+kill_process() {
+  # Kill running process
+  killall scdaemon gpg-agent 2>/dev/null
+}
+
+#===============================================================================
+#
+#     init - Init the gnupg config, start from an empty keyring
+#
+#===============================================================================
+init() {
+  kill_process
+
+  # Cleanup old gnupg home directory
+  dir=$(basename "${gnupg_home_dir}")
+  rm -fr "${dir}" foo.txt*
+  mkdir "${dir}"
+  chmod 700 "${dir}"
+
+  {
+    echo reader-port \"Ledger token\"
+    echo allow-admin
+    echo enable-pinpad-varlen
+    echo card-timeout 1
+  } > "${dir}/scdaemon.conf"
+}
+
+#===============================================================================
+#
+#     card - Show/edit the card status and configuration
+#
+#===============================================================================
+card() {
+
+  gpg --homedir "${gnupg_home_dir}" --card-edit
+}
+
+#===============================================================================
+#
+#     encrypt - Encrypt a clear file
+#
+#===============================================================================
+encrypt() {
+  local recipient=""
+  kill_process
+  rm -fr foo*
+  echo CLEAR > foo.txt
+
+  [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
+
+  recipient=$(gpg --homedir "${gnupg_home_dir}" --card-status  | grep "General key info" | awk  '{print $NF}')
+
+  echo "Encrypt with recipient '${recipient}'"
+
+  gpg --homedir "${gnupg_home_dir}" ${verbose_mode} --encrypt --recipient "${recipient}" foo.txt
+}
+
+#===============================================================================
+#
+#     decrypt - Decrypt a file and compare with original clear content
+#
+#===============================================================================
+decrypt() {
+
+  kill_process
+
+  [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
+
+  gpg --homedir "${gnupg_home_dir}" ${verbose_mode} --decrypt foo.txt.gpg > foo_dec.txt
+
+  # Check with original clear file
+  diff foo.txt foo_dec.txt >/dev/null
+  if [[ $? -eq 0 ]]; then
+    echo "Success !"
+  else
+    echo "Decryption error!"
+  fi
+  rm -fr foo*
+}
+
+#===============================================================================
+#
+#     sign - Sign a file
+#
+#===============================================================================
+sign() {
+
+  kill_process
+  rm -fr foo*
+  echo CLEAR > foo.txt
+
+  [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
+
+  gpg --homedir "${gnupg_home_dir}" ${verbose_mode} --sign foo.txt
+}
+
+#===============================================================================
+#
+#     verify - Verify a file signature
+#
+#===============================================================================
+verify() {
+
+  kill_process
+
+  [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
+
+  gpg --homedir "${gnupg_home_dir}" ${verbose_mode} --verify foo.txt.gpg
+  rm -fr foo*
+}
+
+#===============================================================================
+#
+#     Parsing parameters
+#
+#===============================================================================
+
+if (($# < 1)); then
+  help
+fi
+
+while getopts ":c:vh" opt; do
+  case $opt in
+
+    c)
+      case ${OPTARG} in
+        init|card|encrypt|decrypt|sign|verify)
+          CMD=${OPTARG}
+          ;;
+        *)
+          echo "Wrong parameter '${OPTARG}'!"
+          exit 1
+          ;;
+      esac
+      ;;
+
+    v)  VERBOSE=true ;;
+    h)  help ;;
+
+    \?) echo "Unknown option: -${OPTARG}" >&2; exit 1;;
+    : ) echo "Missing option argument for -${OPTARG}" >&2; exit 1;;
+    * ) echo "Unimplemented option: -${OPTARG}" >&2; exit 1;;
+  esac
+done
+
+#===============================================================================
+#
+#     Main
+#
+#===============================================================================
+
+# execute the command
+${CMD}