diff --git a/boot.php b/boot.php
index 1766e801ed..a1e5f44f89 100644
--- a/boot.php
+++ b/boot.php
@@ -103,9 +103,9 @@ define('SSL_POLICY_SELFSIGN',     2);
  * Registration policies
  * @{
  */
-define('REGISTER_CLOSED',        0);
-define('REGISTER_APPROVE',       1);
-define('REGISTER_OPEN',          2);
+define('REGISTER_CLOSED',        \Friendica\Module\Register::CLOSED);
+define('REGISTER_APPROVE',       \Friendica\Module\Register::APPROVE);
+define('REGISTER_OPEN',          \Friendica\Module\Register::OPEN);
 /**
  * @}
 */
diff --git a/src/Module/Register.php b/src/Module/Register.php
new file mode 100644
index 0000000000..6744a0a5f3
--- /dev/null
+++ b/src/Module/Register.php
@@ -0,0 +1,311 @@
+<?php
+
+namespace Friendica\Module;
+
+use Friendica\BaseModule;
+use Friendica\Content\Text\BBCode;
+use Friendica\Core\Config;
+use Friendica\Core\Hook;
+use Friendica\Core\L10n;
+use Friendica\Core\Logger;
+use Friendica\Core\PConfig;
+use Friendica\Core\Renderer;
+use Friendica\Core\System;
+use Friendica\Core\Worker;
+use Friendica\Database\DBA;
+use Friendica\Model;
+use Friendica\Util\Strings;
+
+/**
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+abstract class Register extends BaseModule
+{
+	const CLOSED  = 0;
+	const APPROVE = 1;
+	const OPEN    = 2;
+
+	/**
+	 * @brief Module GET method to display any content
+	 *
+	 * Extend this method if the module is supposed to return any display
+	 * through a GET request. It can be an HTML page through templating or a
+	 * XML feed or a JSON output.
+	 *
+	 * @return string
+	 */
+	public static function content()
+	{
+		// logged in users can register others (people/pages/groups)
+		// even with closed registrations, unless specifically prohibited by site policy.
+		// 'block_extended_register' blocks all registrations, period.
+		$block = Config::get('system', 'block_extended_register');
+
+		if (local_user() && ($block)) {
+			notice('Permission denied.' . EOL);
+			return '';
+		}
+
+		if ((!local_user()) && (intval(Config::get('config', 'register_policy')) === self::CLOSED)) {
+			notice('Permission denied.' . EOL);
+			return '';
+		}
+
+		$max_dailies = intval(Config::get('system', 'max_daily_registrations'));
+		if ($max_dailies) {
+			$count = DBA::count('user', ['`register_date` > UTC_TIMESTAMP - INTERVAL 1 day']);
+			if ($count >= $max_dailies) {
+				Logger::log('max daily registrations exceeded.');
+				notice(L10n::t('This site has exceeded the number of allowed daily account registrations. Please try again tomorrow.') . EOL);
+				return '';
+			}
+		}
+
+		if (!empty($_SESSION['theme'])) {
+			unset($_SESSION['theme']);
+		}
+		if (!empty($_SESSION['mobile-theme'])) {
+			unset($_SESSION['mobile-theme']);
+		}
+
+		$username   = defaults($_REQUEST, 'username'  , '');
+		$email      = defaults($_REQUEST, 'email'     , '');
+		$openid_url = defaults($_REQUEST, 'openid_url', '');
+		$nickname   = defaults($_REQUEST, 'nickname'  , '');
+		$photo      = defaults($_REQUEST, 'photo'     , '');
+		$invite_id  = defaults($_REQUEST, 'invite_id' , '');
+
+		if (Config::get('system', 'no_openid')) {
+			$fillwith = '';
+			$fillext  = '';
+			$oidlabel = '';
+		} else {
+			$fillwith = L10n::t('You may (optionally) fill in this form via OpenID by supplying your OpenID and clicking "Register".');
+			$fillext  = L10n::t('If you are not familiar with OpenID, please leave that field blank and fill in the rest of the items.');
+			$oidlabel = L10n::t('Your OpenID (optional): ');
+		}
+
+		if (Config::get('system', 'publish_all')) {
+			$profile_publish = '<input type="hidden" name="profile_publish_reg" value="1" />';
+		} else {
+			$publish_tpl = Renderer::getMarkupTemplate('profile_publish.tpl');
+			$profile_publish = Renderer::replaceMacros($publish_tpl, [
+				'$instance'     => 'reg',
+				'$pubdesc'      => L10n::t('Include your profile in member directory?'),
+				'$yes_selected' => '',
+				'$no_selected'  => ' checked="checked"',
+				'$str_yes'      => L10n::t('Yes'),
+				'$str_no'       => L10n::t('No'),
+			]);
+		}
+
+		$ask_password = ! DBA::count('contact');
+
+		$tpl = Renderer::getMarkupTemplate('register.tpl');
+
+		$arr = ['template' => $tpl];
+
+		Hook::callAll('register_form', $arr);
+
+		$tpl = $arr['template'];
+
+		$tos = new Tos();
+
+		$o = Renderer::replaceMacros($tpl, [
+			'$invitations'  => Config::get('system', 'invitation_only'),
+			'$permonly'     => intval(Config::get('config', 'register_policy')) === self::APPROVE,
+			'$permonlybox'  => ['permonlybox', L10n::t('Note for the admin'), '', L10n::t('Leave a message for the admin, why you want to join this node')],
+			'$invite_desc'  => L10n::t('Membership on this site is by invitation only.'),
+			'$invite_label' => L10n::t('Your invitation code: '),
+			'$invite_id'    => $invite_id,
+			'$regtitle'     => L10n::t('Registration'),
+			'$registertext' => BBCode::convert(Config::get('config', 'register_text', '')),
+			'$fillwith'     => $fillwith,
+			'$fillext'      => $fillext,
+			'$oidlabel'     => $oidlabel,
+			'$openid'       => $openid_url,
+			'$namelabel'    => L10n::t('Your Full Name (e.g. Joe Smith, real or real-looking): '),
+			'$addrlabel'    => L10n::t('Your Email Address: (Initial information will be send there, so this has to be an existing address.)'),
+			'$ask_password' => $ask_password,
+			'$password1'    => ['password1', L10n::t('New Password:'), '', L10n::t('Leave empty for an auto generated password.')],
+			'$password2'    => ['confirm', L10n::t('Confirm:'), '', ''],
+			'$nickdesc'     => L10n::t('Choose a profile nickname. This must begin with a text character. Your profile address on this site will then be "<strong>nickname@%s</strong>".', self::getApp()->getHostName()),
+			'$nicklabel'    => L10n::t('Choose a nickname: '),
+			'$photo'        => $photo,
+			'$publish'      => $profile_publish,
+			'$regbutt'      => L10n::t('Register'),
+			'$username'     => $username,
+			'$email'        => $email,
+			'$nickname'     => $nickname,
+			'$sitename'     => self::getApp()->getHostName(),
+			'$importh'      => L10n::t('Import'),
+			'$importt'      => L10n::t('Import your profile to this friendica instance'),
+			'$showtoslink'  => Config::get('system', 'tosdisplay'),
+			'$tostext'      => L10n::t('Terms of Service'),
+			'$showprivstatement' => Config::get('system', 'tosprivstatement'),
+			'$privstatement'=> $tos->privacy_complete,
+			'$baseurl'      => System::baseurl(),
+			'$form_security_token' => BaseModule::getFormSecurityToken('register'),
+			'$explicit_content' => Config::get('system', 'explicit_content', false),
+			'$explicit_content_note' => L10n::t('Note: This node explicitly contains adult content')
+		]);
+
+		return $o;
+	}
+
+	/**
+	 * @brief Module POST method to process submitted data
+	 *
+	 * Extend this method if the module is supposed to process POST requests.
+	 * Doesn't display any content
+	 */
+	public static function post()
+	{
+		BaseModule::checkFormSecurityTokenRedirectOnError('/register', 'register');
+
+		$a = self::getApp();
+
+		$arr = ['post' => $_POST];
+		Hook::callAll('register_post', $arr);
+
+		$max_dailies = intval(Config::get('system', 'max_daily_registrations'));
+		if ($max_dailies) {
+			$count = DBA::count('user', ['`register_date` > UTC_TIMESTAMP - INTERVAL 1 day']);
+			if ($count >= $max_dailies) {
+				return;
+			}
+		}
+
+		switch (Config::get('config', 'register_policy')) {
+			case self::OPEN:
+				$blocked = 0;
+				$verified = 1;
+				break;
+
+			case self::APPROVE:
+				$blocked = 1;
+				$verified = 0;
+				break;
+
+			case self::CLOSED:
+			default:
+				if (empty($_SESSION['authenticated']) && empty($_SESSION['administrator'])) {
+					\notice(L10n::t('Permission denied.') . EOL);
+					return;
+				}
+				$blocked = 1;
+				$verified = 0;
+				break;
+		}
+
+		$netpublish = !empty($_POST['profile_publish_reg']);
+
+		$arr = $_POST;
+
+		$arr['blocked'] = $blocked;
+		$arr['verified'] = $verified;
+		$arr['language'] = L10n::detectLanguage();
+
+		try {
+			$result = Model\User::create($arr);
+		} catch (\Exception $e) {
+			\notice($e->getMessage());
+			return;
+		}
+
+		$user = $result['user'];
+
+		if ($netpublish && intval(Config::get('config', 'register_policy')) !== self::APPROVE) {
+			$url = $a->getBaseUrl() . '/profile/' . $user['nickname'];
+			Worker::add(PRIORITY_LOW, 'Directory', $url);
+		}
+
+		$using_invites = Config::get('system', 'invitation_only');
+		$num_invites   = Config::get('system', 'number_invites');
+		$invite_id = (!empty($_POST['invite_id']) ? Strings::escapeTags(trim($_POST['invite_id'])) : '');
+
+		if (intval(Config::get('config', 'register_policy')) === self::OPEN) {
+			if ($using_invites && $invite_id) {
+				Model\Register::deleteByHash($invite_id);
+				PConfig::set($user['uid'], 'system', 'invites_remaining', $num_invites);
+			}
+
+			// Only send a password mail when the password wasn't manually provided
+			if (empty($_POST['password1']) || empty($_POST['confirm'])) {
+				$res = Model\User::sendRegisterOpenEmail(
+					$user,
+					Config::get('config', 'sitename'),
+					$a->getBaseUrl(),
+					$result['password']
+				);
+
+				if ($res) {
+					\info(L10n::t('Registration successful. Please check your email for further instructions.') . EOL);
+					$a->internalRedirect();
+				} else {
+					\notice(
+						L10n::t('Failed to send email message. Here your accout details:<br> login: %s<br> password: %s<br><br>You can change your password after login.',
+							$user['email'],
+							$result['password'])
+						. EOL
+					);
+				}
+			} else {
+				\info(L10n::t('Registration successful.') . EOL);
+				$a->internalRedirect();
+			}
+		} elseif (intval(Config::get('config', 'register_policy')) === self::APPROVE) {
+			if (!strlen(Config::get('config', 'admin_email'))) {
+				\notice(L10n::t('Your registration can not be processed.') . EOL);
+				$a->internalRedirect();
+			}
+
+			Model\Register::createForApproval($user['uid'], Config::get('system', 'language'), $_POST['permonlybox']);
+
+			// invite system
+			if ($using_invites && $invite_id) {
+				Model\Register::deleteByHash($invite_id);
+				PConfig::set($user['uid'], 'system', 'invites_remaining', $num_invites);
+			}
+
+			// send email to admins
+			$admins_stmt = DBA::select(
+				'user',
+				['uid', 'language', 'email'],
+				['email' => explode(',', str_replace(' ', '', Config::get('config', 'admin_email')))]
+			);
+
+			// send notification to admins
+			while ($admin = DBA::fetch($admins_stmt)) {
+				\notification([
+					'type'         => NOTIFY_SYSTEM,
+					'event'        => 'SYSTEM_REGISTER_REQUEST',
+					'source_name'  => $user['username'],
+					'source_mail'  => $user['email'],
+					'source_nick'  => $user['nickname'],
+					'source_link'  => $a->getBaseUrl() . '/admin/users/',
+					'link'         => $a->getBaseUrl() . '/admin/users/',
+					'source_photo' => $a->getBaseUrl() . '/photo/avatar/' . $user['uid'] . '.jpg',
+					'to_email'     => $admin['email'],
+					'uid'          => $admin['uid'],
+					'language'     => defaults($admin, 'language', 'en'),
+					'show_in_notification_page' => false
+				]);
+			}
+			DBA::close($admins_stmt);
+
+			// send notification to the user, that the registration is pending
+			Model\User::sendRegisterPendingEmail(
+				$user,
+				Config::get('config', 'sitename'),
+				$a->getBaseURL(),
+				$result['password']
+			);
+
+			\info(L10n::t('Your registration is pending approval by the site owner.') . EOL);
+			$a->internalRedirect();
+		}
+
+		return;
+	}
+}
diff --git a/view/templates/register.tpl b/view/templates/register.tpl
index 4da865d4cf..456fadaab8 100644
--- a/view/templates/register.tpl
+++ b/view/templates/register.tpl
@@ -41,7 +41,7 @@
 	</div>
 	<div id="register-email-end" ></div>
 
-{{if $passwords}}
+{{if $ask_password}}
 	{{include file="field_password.tpl" field=$password1}}
 	{{include file="field_password.tpl" field=$password2}}
 {{/if}}
diff --git a/view/theme/frio/templates/register.tpl b/view/theme/frio/templates/register.tpl
index feb8035fa3..4819c5ee81 100644
--- a/view/theme/frio/templates/register.tpl
+++ b/view/theme/frio/templates/register.tpl
@@ -42,7 +42,7 @@
 		</div>
 		<div id="register-email-end" ></div>
 
-		{{if $passwords}}
+		{{if $ask_password}}
 		{{include file="field_password.tpl" field=$password1}}
 		{{include file="field_password.tpl" field=$password2}}
 		{{/if}}