diff --git a/main/attendance/attendance_sheet.php b/main/attendance/attendance_sheet.php
index e63daeff67..5f36fc0802 100755
--- a/main/attendance/attendance_sheet.php
+++ b/main/attendance/attendance_sheet.php
@@ -18,6 +18,8 @@ $isDrhOfCourse = CourseManager::isUserSubscribedInCourseAsDrh(
     api_get_course_info()
 ) || api_is_drh();
 
+$allowSignature = api_get_configuration_value('enable_sign_attendance_sheet');
+
 if (api_is_allowed_to_edit(null, true) ||
     api_is_coach(api_get_session_id(), api_get_course_int_id()) ||
     $isDrhOfCourse
@@ -353,6 +355,15 @@ if (api_is_allowed_to_edit(null, true) ||
                         $disabled = '';
                     }
 
+                    if ($allowSignature) {
+                        $attendance = new Attendance();
+                        $signature = $attendance->getSignature($user['user_id'], $calendar['id']);
+                        if (!empty($signature)) {
+                            $disabled = 'disabled';
+                            $checked = 'checked';
+                        }
+                    }
+
                     echo '<td style="'.$style_td.'" class="checkboxes_col_'.$calendar['id'].'">';
                     echo '<div class="check">';
 
@@ -360,6 +371,23 @@ if (api_is_allowed_to_edit(null, true) ||
                         if (!$is_locked_attendance || api_is_platform_admin()) {
                             echo '<input type="checkbox" name="check_presence['.$calendar['id'].'][]" value="'.$user['user_id'].'" '.$disabled.' '.$checked.' />';
                             echo '<span class="anchor_'.$calendar['id'].'"></span>';
+                            if ($allowSignature) {
+                                if (!empty($signature)) {
+                                    echo '<div class="list-data">
+                                        <span class="item"></span>
+                                        <a id="sign-'.$user['user_id'].'-'.$calendar['id'].'" class="btn btn-primary attendance-sign-view" href="javascript:void(0)">
+                                            <em class="fa fa-search"></em> '.get_lang('SignView').'
+                                        </a>
+                                    </div>';
+                                } else {
+                                    echo '<div class="list-data">
+                                        <span class="item"></span>
+                                        <a id="sign-'.$user['user_id'].'-'.$calendar['id'].'" class="btn btn-primary attendance-sign" href="javascript:void(0)">
+                                            <em class="fa fa-pencil"></em> '.get_lang('Sign').'
+                                        </a>
+                                    </div>';
+                                }
+                            }
                         } else {
                             echo $presence ? Display::return_icon('checkbox_on.png', get_lang('Presence'), null, ICON_SIZE_TINY) : Display::return_icon('checkbox_off.png', get_lang('Presence'), null, ICON_SIZE_TINY);
                         }
@@ -468,4 +496,149 @@ if (api_is_allowed_to_edit(null, true) ||
         } ?>
     </table>
 <?php
-} ?>
+}
+
+if ($allowSignature) {
+    ?>
+    <div id="sign_popup" style="display: none">
+        <div id="signature_area" class="well">
+            <canvas width="400px"></canvas>
+        </div>
+        <span class="loading" style="display: none"><em class="fa fa-spinner"></em></span>
+        <span id="save_controls">
+            <button id="sign_popup_save" class="btn btn-primary" type="submit">
+                <em class="fa fa-save"></em> <?php echo get_lang('Save'); ?>
+            </button>
+            <button id="sign_popup_clean" class="btn btn-default" type="submit">
+                <em class="fa fa-eraser"></em> <?php echo get_lang('Clean'); ?>
+            </button>
+        </span>
+        <span id="remove_controls" clase="hidden">
+            <button id="sign_popup_remove" class="btn btn-danger" type="submit">
+                <em class="fa fa-remove"></em> <?php echo get_lang('Remove'); ?>
+            </button>
+        </span>
+        <span id="close_controls" style="display: none">
+            <span id="sign_results"></span>
+            <hr />
+            <button id="sign_popup_close" class="btn btn-default" type="submit">
+                <?php echo get_lang('Close'); ?>
+            </button>
+        </span>
+        <input type="hidden" id="sign-selected" />
+    </div>
+
+    <script>
+        var imageFormat = 'image/png';
+        var canvas = document.querySelector("#signature_area canvas");
+        var signaturePad = new SignaturePad(canvas);
+        var urlAjax = "<?php echo api_get_path(WEB_AJAX_PATH).'user_manager.ajax.php?'.api_get_cidreq(); ?>";
+
+        $(function() {
+            $("#sign_popup_close").on("click", function() {
+                $("#sign_popup").dialog("close");
+                $('#loading').hide();
+                $('#save_controls').show();
+                $('#close_controls').hide();
+                $('#signature_area').show();
+            });
+
+            $("#sign_popup_clean").on("click", function() {
+                signaturePad.clear();
+            });
+
+            $("#sign_popup_remove").on("click", function() {
+                var selected = $("#sign-selected").val();
+                $.ajax({
+                    type: "POST",
+                    url: urlAjax,
+                    data: "a=remove_attendance_sign&selected="+selected,
+                    success: function(data) {
+                        location.reload();
+                    },
+                });
+            });
+
+            $("#sign_popup_save").on("click", function() {
+                if (signaturePad.isEmpty()) {
+                    alert('<?php echo get_lang('ProvideASignatureFirst'); ?>');
+                    return false;
+                }
+                var selected = $("#sign-selected").val();
+                var dataURL = signaturePad.toDataURL(imageFormat);
+                $.ajax({
+                    beforeSend: function(result) {
+                        $('#loading').show();
+                    },
+                    type: "POST",
+                    url: urlAjax,
+                    data: "a=sign_attendance&selected="+selected+"&file="+dataURL,
+                    success: function(data) {
+                        $('#loading').hide();
+                        $('#save_controls').hide();
+                        $('#close_controls').show();
+                        $('#signature_area').hide();
+
+                        signaturePad.clear();
+                        if (1 == data) {
+                            $('#sign_results').html('<?php echo get_lang('Saved'); ?>');
+                        } else {
+                            $('#sign_results').html('<?php echo get_lang('Error'); ?>');
+                        }
+                        $('#close_controls').hide();
+                        location.reload();
+                    },
+                });
+            });
+
+            $(".attendance-sign").on("click", function() {
+                $("#sign-selected").val($(this).attr("id"));
+                $("#sign_popup").dialog({
+                    autoOpen: false,
+                    width: 500,
+                    height: 'auto',
+                    close: function(){
+                    }
+                });
+                $("#sign_popup").dialog("open");
+                $("#save_controls").show();
+                $("#remove_controls").hide();
+                $('#signature_area').show();
+                $('#signature_area').html("<canvas width='400px'></canvas>");
+                canvas = document.querySelector("#signature_area canvas");
+                signaturePad = new SignaturePad(canvas);
+            });
+
+            $(".attendance-sign-view").on("click", function() {
+                var selected = $(this).attr("id");
+                $.ajax({
+                    beforeSend: function(result) {
+                        $('#signature_area').html("");
+                        $('#loading').show();
+                    },
+                    type: "POST",
+                    url: urlAjax,
+                    data: "a=get_attendance_sign&selected="+selected,
+                    success: function(sign) {
+                        $('#signature_area').show();
+                        $('#signature_area').html("<img src='"+sign+"' />");
+                    },
+                });
+                $("#sign_popup").dialog({
+                    autoOpen: false,
+                    width: 500,
+                    height: 'auto',
+                    close: function(){
+                    }
+                });
+                $("#sign-selected").val(selected);
+                $("#sign_popup").dialog("open");
+                $("#save_controls").hide();
+                $("#remove_controls").show();
+            });
+        });
+    </script>
+
+    <?php
+}
+?>
diff --git a/main/attendance/index.php b/main/attendance/index.php
index b70f11290c..6f68b8718d 100755
--- a/main/attendance/index.php
+++ b/main/attendance/index.php
@@ -103,7 +103,7 @@ $(function() {
 
             $(".row_odd  td.checkboxes_col_"+calendar_id).css({
                 "opacity":"1",
-                "background-color":"#F9F9F9",   
+                "background-color":"#F9F9F9",
                 "border-left":"none",
                 "border-right":"none"
             });
@@ -125,16 +125,16 @@ $(function() {
 
             $(".row_odd  td.checkboxes_col_"+calendar_id).css({
                 "opacity":"1",
-                "background-color":"#dcdcdc", 
-                "border-left":"1px #bbb solid", 
-                "border-right":"1px #bbb solid", 
+                "background-color":"#dcdcdc",
+                "border-left":"1px #bbb solid",
+                "border-right":"1px #bbb solid",
                 "z-index":"1"
             });
             $(".row_even td.checkboxes_col_"+calendar_id).css({
                 "opacity":"1",
-                "background-color":"#eee", 
-                "border-left":"1px #bbb solid", 
-                "border-right":"1px #bbb solid", 
+                "background-color":"#eee",
+                "border-left":"1px #bbb solid",
+                "border-right":"1px #bbb solid",
                 "z-index":"1"
             });
 
@@ -185,6 +185,12 @@ $(function() {
 });
 
 </script>';
+
+$allowSignature = api_get_configuration_value('enable_sign_attendance_sheet');
+if ($allowSignature) {
+    $htmlHeadXtra[] = api_get_asset('signature_pad/signature_pad.umd.js');
+}
+
 $student_param = '';
 $student_id = null;
 
diff --git a/main/inc/ajax/user_manager.ajax.php b/main/inc/ajax/user_manager.ajax.php
index 865f5f1301..611c2b635e 100755
--- a/main/inc/ajax/user_manager.ajax.php
+++ b/main/inc/ajax/user_manager.ajax.php
@@ -14,9 +14,39 @@ require_once __DIR__.'/../global.inc.php';
 $request = HttpRequest::createFromGlobals();
 $isRequestByAjax = $request->isXmlHttpRequest();
 
-$action = $_GET['a'];
+$action = $_REQUEST['a'];
 
 switch ($action) {
+    case 'get_attendance_sign':
+        $selected = $_REQUEST['selected'];
+        if (!empty($selected)) {
+            list($prefix, $userId, $attendanceCalendarId) = explode('-', $selected);
+            $attendance = new Attendance();
+            $signature = $attendance->getSignature($userId, $attendanceCalendarId);
+            echo $signature;
+        }
+        break;
+    case 'remove_attendance_sign':
+        $selected = $_REQUEST['selected'];
+        if (!empty($selected)) {
+            list($prefix, $userId, $attendanceCalendarId) = explode('-', $selected);
+            $attendance = new Attendance();
+            $attendance->deleteSignature($userId, $attendanceCalendarId);
+        }
+        break;
+    case 'sign_attendance':
+        $selected = $_REQUEST['selected'];
+        $file = isset($_REQUEST['file']) ? $_REQUEST['file'] : '';
+        $file = str_replace(' ', '+', $file);
+        if (!empty($selected)) {
+            list($prefix, $userId, $attendanceCalendarId) = explode('-', $selected);
+            $attendance = new Attendance();
+            $attendance->saveSignature($userId, $attendanceCalendarId, $file);
+            echo 1;
+            exit;
+        }
+        echo 0;
+        break;
     case 'set_expiration_date':
         $status = (int) $_REQUEST['status'];
         $dates = UserManager::getExpirationDateByRole($status);
diff --git a/main/inc/lib/attendance.lib.php b/main/inc/lib/attendance.lib.php
index b203f0a525..da9c37e0dd 100755
--- a/main/inc/lib/attendance.lib.php
+++ b/main/inc/lib/attendance.lib.php
@@ -10,6 +10,9 @@
  *
  * @package chamilo.attendance
  */
+
+use Chamilo\CourseBundle\Entity\CAttendanceSheet;
+
 class Attendance
 {
     // constants
@@ -181,22 +184,22 @@ class Attendance
                 ) || api_is_drh();
                 if (api_is_allowed_to_edit(null, true) || $isDrhOfCourse) {
                     // Link to edit
-                    $attendance[1] = '<a 
+                    $attendance[1] = '<a
                         href="index.php?'.api_get_cidreq().'&action=attendance_sheet_list&attendance_id='.$attendance[0].$student_param.'">'.
                         Security::remove_XSS($attendance[1]).
                         '</a>'.
                         $session_star;
                 } else {
                     // Link to view
-                    $attendance[1] = '<a 
+                    $attendance[1] = '<a
                         href="index.php?'.api_get_cidreq().'&action=attendance_sheet_list_no_edit&attendance_id='.$attendance[0].$student_param.'">'.
                         Security::remove_XSS($attendance[1]).
                         '</a>'.
                         $session_star;
                 }
             } else {
-                $attendance[1] = '<a 
-                    class="muted" 
+                $attendance[1] = '<a
+                    class="muted"
                     href="index.php?'.api_get_cidreq().'&action=attendance_sheet_list&attendance_id='.$attendance[0].$student_param.'">'.
                     Security::remove_XSS($attendance[1]).
                     '</a>'.
@@ -2506,4 +2509,132 @@ class Attendance
 
         return $data;
     }
+
+    /**
+     * Clean a sing of a user in attendance sheet.
+     *
+     * @param $userId
+     * @param $attendanceCalendarId
+     *
+     * @return false or void when it is deleted.
+     */
+    public function deleteSignature(
+        $userId,
+        $attendanceCalendarId
+    ) {
+        $allowSignature = api_get_configuration_value('enable_sign_attendance_sheet');
+        if (!$allowSignature) {
+            return false;
+        }
+
+        $courseId = api_get_course_int_id();
+        $em = Database::getManager();
+        $criteria = [
+            'userId' => $userId,
+            'attendanceCalendarId' => $attendanceCalendarId,
+            'cId' => $courseId,
+        ];
+
+        $repo = $em->getRepository('ChamiloCourseBundle:CAttendanceSheet');
+        $result = $repo->findBy($criteria);
+
+        if (count($result) > 0) {
+            /** @var CAttendanceSheet $attendanceSheet */
+            $attendanceSheet = $result[0];
+            $attendanceSheet->setPresence(0);
+            $attendanceSheet->setSignature('');
+
+            $em->persist($attendanceSheet);
+            $em->flush();
+        }
+    }
+
+    /**
+     * Get the user sign in attendance sheet.
+     *
+     * @param $userId
+     * @param $attendanceCalendarId
+     *
+     * @return false|string
+     */
+    public function getSignature(
+        $userId,
+        $attendanceCalendarId
+    ) {
+        $allowSignature = api_get_configuration_value('enable_sign_attendance_sheet');
+        if (!$allowSignature) {
+            return false;
+        }
+
+        $courseId = api_get_course_int_id();
+        $em = Database::getManager();
+        $repo = $em->getRepository('ChamiloCourseBundle:CAttendanceSheet');
+
+        $criteria = [
+            'userId' => $userId,
+            'attendanceCalendarId' => $attendanceCalendarId,
+            'cId' => $courseId,
+        ];
+        $result = $repo->findBy($criteria);
+
+        $signature = "";
+        if (count($result) > 0) {
+            /** @var CAttendanceSheet $attendanceSheet */
+            $attendanceSheet = $result[0];
+            $signature = $attendanceSheet->getSignature();
+        }
+
+        return $signature;
+    }
+
+    /**
+     * It saves the user sign from attendance sheet.
+     *
+     * @param $userId
+     * @param $attendanceCalendarId
+     * @param $file string in base64
+     *
+     * @return false or void when it is saved.
+     */
+    public function saveSignature(
+        $userId,
+        $attendanceCalendarId,
+        $file
+    ) {
+        $allowSignature = api_get_configuration_value('enable_sign_attendance_sheet');
+        if (!$allowSignature) {
+            return false;
+        }
+
+        $courseId = api_get_course_int_id();
+        $em = Database::getManager();
+        $criteria = [
+            'userId' => $userId,
+            'attendanceCalendarId' => $attendanceCalendarId,
+            'cId' => $courseId,
+        ];
+
+        $repo = $em->getRepository('ChamiloCourseBundle:CAttendanceSheet');
+        $result = $repo->findBy($criteria);
+
+        /** @var CAttendanceSheet $attendanceSheet */
+        if (count($result) > 0) {
+            $attendanceSheet = $result[0];
+            $attendanceSheet->setPresence(1);
+            $attendanceSheet->setSignature($file);
+            $em->persist($attendanceSheet);
+            $em->flush();
+        } else {
+            $attendanceSheet = new CAttendanceSheet();
+            $attendanceSheet
+                ->setCId($courseId)
+                ->setPresence(1)
+                ->setUserId($userId)
+                ->setAttendanceCalendarId($attendanceCalendarId)
+                ->setSignature($file);
+
+            $em->persist($attendanceSheet);
+            $em->flush();
+        }
+    }
 }
diff --git a/main/install/configuration.dist.php b/main/install/configuration.dist.php
index a8c1e1298b..7307577c65 100755
--- a/main/install/configuration.dist.php
+++ b/main/install/configuration.dist.php
@@ -2221,6 +2221,12 @@ INSERT INTO `extra_field` (`extra_field_type`, `field_type`, `variable`, `displa
 // Shows the deleted quizzes in my progress page.
 //$_configuration['tracking_my_progress_show_deleted_exercises'] = true;
 
+// Enable sign in attendance sheet for users
+// Require DB changes:
+// ALTER TABLE c_attendance_sheet ADD signature longtext NULL;
+// Requires edit Entity CAttendanceSheet : src/Chamilo/CourseBundle/Entity/CAttendanceSheet.php uncomment "signature" variable.
+//$_configuration['enable_sign_attendance_sheet'] = false;
+
 // KEEP THIS AT THE END
 // -------- Custom DB changes
 // Add user activation by confirmation email
diff --git a/src/Chamilo/CourseBundle/Entity/CAttendanceSheet.php b/src/Chamilo/CourseBundle/Entity/CAttendanceSheet.php
index 7935891b63..1035ac2305 100644
--- a/src/Chamilo/CourseBundle/Entity/CAttendanceSheet.php
+++ b/src/Chamilo/CourseBundle/Entity/CAttendanceSheet.php
@@ -57,6 +57,13 @@ class CAttendanceSheet
      */
     protected $attendanceCalendarId;
 
+    /**
+     * @var string
+     *
+     * @ORM\Column(name="signature", type="string", nullable=true)
+     */
+    //protected $signature;
+
     /**
      * Set presence.
      *
@@ -152,4 +159,34 @@ class CAttendanceSheet
     {
         return $this->attendanceCalendarId;
     }
+
+    /**
+     * @return int
+     */
+    public function getIid()
+    {
+        return $this->iid;
+    }
+
+    /**
+     * Set signature.
+     *
+     * @return CAttendanceSheet
+     */
+    public function setSignature(string $signature)
+    {
+        $this->signature = $signature;
+
+        return $this;
+    }
+
+    /**
+     * Get signature.
+     *
+     * @return string
+     */
+    public function getSignature()
+    {
+        return $this->signature;
+    }
 }