diff --git a/Gemfile b/Gemfile
index af32aa9..6b01b67 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ gem 'browser'
 gem 'dotenv'
 gem 'haml'
 gem 'i18n'
+gem 'koala'
 gem 'localeapp', require: false
 gem 'odnoklassniki'
 gem 'omniauth'
@@ -12,15 +13,17 @@ gem 'omniauth-facebook'
 gem 'omniauth-instagram'
 gem 'omniauth-twitter'
 gem 'omniauth-vkontakte'
-gem 'koala'
 gem 'pg'
+gem 'phony_rails'
 gem 'rack-flash3'
 gem 'rake'
 gem 'rest-client'
 gem 'require_all'
+gem 'rotp'
 gem 'sinatra'
 gem 'sinatra-activerecord'
 gem 'sinatra-contrib', require: false
+gem 'smsc_ru', git: 'https://github.com/startwifi/smsc_ru'
 gem 'twitter'
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index 38f9171..f4436f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,12 @@
+GIT
+  remote: https://github.com/startwifi/smsc_ru
+  revision: 654de5ac383a0db05746262cd061dd91dea83bc3
+  specs:
+    smsc_ru (0.1.3)
+      addressable (~> 2.3)
+      faraday (~> 0.9)
+      virtus (~> 1.0)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -16,6 +25,10 @@ GEM
       public_suffix (~> 2.0, >= 2.0.2)
     arel (7.1.4)
     ast (2.3.0)
+    axiom-types (0.1.1)
+      descendants_tracker (~> 0.0.4)
+      ice_nine (~> 0.11.0)
+      thread_safe (~> 0.3, >= 0.3.1)
     backports (3.6.8)
     bond (0.5.1)
     brakeman (3.5.0)
@@ -25,8 +38,12 @@ GEM
     childprocess (0.5.9)
       ffi (~> 1.0, >= 1.0.11)
     coderay (1.1.1)
+    coercible (1.0.0)
+      descendants_tracker (~> 0.0.1)
     concurrent-ruby (1.0.5)
     database_cleaner (1.5.3)
+    descendants_tracker (0.0.4)
+      thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.3)
     domain_name (0.5.20170223)
       unf (>= 0.0.5, < 1.0.0)
@@ -63,6 +80,7 @@ GEM
     http-form_data (1.0.1)
     http_parser.rb (0.6.0)
     i18n (0.8.1)
+    ice_nine (0.11.2)
     iniparse (1.4.2)
     json (2.0.3)
     jwt (1.5.6)
@@ -122,6 +140,10 @@ GEM
     parser (2.4.0.0)
       ast (~> 2.2)
     pg (0.19.0)
+    phony (2.15.41)
+    phony_rails (0.14.5)
+      activesupport (>= 3.0)
+      phony (~> 2.15)
     powerpack (0.1.1)
     pry (0.10.4)
       coderay (~> 1.1.0)
@@ -153,6 +175,7 @@ GEM
       rack (>= 1.0)
       rack-test (~> 0.6.2)
       ripl (>= 0.7.0)
+    rotp (3.3.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -218,6 +241,11 @@ GEM
       unf_ext
     unf_ext (0.0.7.2)
     unicode-display_width (1.1.3)
+    virtus (1.0.5)
+      axiom-types (~> 0.1)
+      coercible (~> 1.0)
+      descendants_tracker (~> 0.0, >= 0.0.3)
+      equalizer (~> 0.0, >= 0.0.9)
 
 PLATFORMS
   ruby
@@ -243,12 +271,14 @@ DEPENDENCIES
   omniauth-vkontakte
   overcommit
   pg
+  phony_rails
   pry-byebug
   rack-flash3
   rack-test
   rake
   require_all
   rest-client
+  rotp
   rspec
   rubocop
   ruby_css_lint
@@ -257,6 +287,7 @@ DEPENDENCIES
   sinatra
   sinatra-activerecord
   sinatra-contrib
+  smsc_ru!
   tux
   twitter
 
diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
index c665c32..bb6cb4a 100644
--- a/app/controllers/events_controller.rb
+++ b/app/controllers/events_controller.rb
@@ -30,6 +30,7 @@ class EventsController < ApplicationController
   end
 
   get '/:provider/auth' do
+    return auth_sms if current_user.provider == 'sms'
     current_user.add_event(:auth)
     redirect to(router_url)
   end
@@ -39,6 +40,19 @@ class EventsController < ApplicationController
     redirect to(router_url)
   end
 
+  def auth_sms
+    case params[:provider]
+    when 'sms_ident_auth'
+      return current_user.add_event(:auth) if session[:sms_auth_success].present?
+      current_user.add_event(:sms_ident)
+    when 'sms_ident'
+      current_user.add_event(:sms_ident)
+    when 'sms_ident_adv'
+      current_user.add_event(:sms_ident_adv)
+    end
+    redirect to(router_url)
+  end
+
   def post_facebook
     FacebookPostService.new(current_user.company, session[:user_token], params).call
     current_user.add_event(:post)
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index f23c1e3..8568e81 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -19,6 +19,9 @@ class SessionsController < ApplicationController
     provider :instagram,
       setup: true,
       scope: 'likes comments relationships'
+    provider :sms,
+      smsauth_url: '/sms/auth',
+      uid_field: 'otp_phone'
     provider :twitter,
       setup: true
     provider :vkontakte,
diff --git a/app/controllers/sms_controller.rb b/app/controllers/sms_controller.rb
new file mode 100644
index 0000000..52431e6
--- /dev/null
+++ b/app/controllers/sms_controller.rb
@@ -0,0 +1,59 @@
+class SmsController < ApplicationController
+  before do
+    load_company
+  end
+
+  get '/sms/authorize' do
+    @sms = SmsSender.new
+    haml :'sms/index'
+  end
+
+  post '/sms/send' do
+    @sms = SmsSender.new(params)
+
+    if @sms.valid?
+      session[:otp_secret] ||= ROTP::Base32.random_base32
+      session[:otp_counter] ||= 0
+      session[:otp_phone] = @sms.phone
+
+      # Start generate OTP password
+      session[:otp_counter] += 1 # Increment counter
+
+      hotp = ROTP::HOTP.new(session[:otp_secret])
+      code = hotp.at(session[:otp_counter])
+
+      @sms.send_sms(code)
+      flash[:notice] = t('sms.success', phone: @sms.phone)
+      redirect to('/sms/validate')
+    else
+      haml :'sms/index'
+    end
+  end
+
+  get '/sms/validate' do
+    haml :'sms/validate'
+  end
+
+  post '/sms/validate' do
+    hotp = ROTP::HOTP.new(session[:otp_secret])
+
+    if hotp.verify(params[:code], session[:otp_counter])
+      if @company.sms.action.eql?('ident_auth') && session[:sms_auth_success].present?
+        redirect to('/sms/auth')
+      end
+      redirect to('/sms/callback')
+    else
+      flash[:alert] = t(:errors)
+      haml :'sms/validate'
+    end
+  end
+
+  private
+
+  def load_company
+    @company = Company.find_by(token: session[:company_token])
+    if @company.nil? || @company.sms.action == 'disabled'
+      redirect to('/')
+    end
+  end
+end
diff --git a/app/controllers/widgets_controller.rb b/app/controllers/widgets_controller.rb
index 5559e51..e9da89e 100644
--- a/app/controllers/widgets_controller.rb
+++ b/app/controllers/widgets_controller.rb
@@ -6,6 +6,7 @@ class WidgetsController < ApplicationController
     case current_user.provider
     when 'facebook' then widget_facebook
     when 'instagram' then widget_instagram
+    when 'sms' then widget_sms
     when 'twitter' then widget_twitter
     when 'vkontakte' then widget_vkontakte
     end
@@ -28,6 +29,24 @@ def widget_instagram
     redirect to('/instagram/auth')
   end
 
+  def widget_sms
+    case @company.sms.action
+    when 'auth'
+      redirect to('/sms/auth')
+    when 'ident_auth'
+      current_user.add_event(:sms_ident)
+      session[:sms_auth_success] = true
+      haml :'visitors/index'
+    when 'ident'
+      if @company.sms.adv
+        current_user.add_event(:sms_ident)
+        haml :'widgets/sms/adv', layout: :'layouts/social'
+      else
+        redirect to('/sms/sms_ident')
+      end
+    end
+  end
+
   def widget_twitter
     case @company.tw.action
     when 'post'
diff --git a/app/models/sms_sender.rb b/app/models/sms_sender.rb
new file mode 100644
index 0000000..7a5ebff
--- /dev/null
+++ b/app/models/sms_sender.rb
@@ -0,0 +1,20 @@
+class SmsSender
+  include ActiveModel::Model
+
+  attr_accessor :phone
+
+  validates_plausible_phone :phone, presence: true, with: /\A\+\d+/
+
+  def send_sms(code)
+    smsc_client.send_sms(phone, "Your password: #{code}")
+  end
+
+  private
+
+  def smsc_client
+    Smsc::Client.new do |client|
+      client.login = ENV['SMSC_LOGIN']
+      client.password = ENV['SMSC_PASSWORD']
+    end 
+  end
+end
diff --git a/app/views/sms/index.haml b/app/views/sms/index.haml
new file mode 100644
index 0000000..64d4d15
--- /dev/null
+++ b/app/views/sms/index.haml
@@ -0,0 +1,19 @@
+.text-center
+  %h1= @company.name
+  %p= t('sms.header')
+  %ul.list-inline
+.row
+  .col-md-offset-4.col-md-4
+    - if @sms.errors.any?
+      #error_explanation
+        %h2= t(:errors)
+        %ul
+          - @sms.errors.full_messages.each do |error|
+            %li= error
+    %form{ action: '/sms/send', method: :post }
+      .form-group
+        %label{ for: :phone }= t('sms.phone')
+        %input.form-control{ name: :phone, type: :tel, placeholder: t('sms.placeholder') }
+        %span.help-block= "#{t('sms.format')} #{t('sms.placeholder')}"
+      .form-group
+        %button.btn.btn-primary{ type: :submit }= t('sms.continue')
diff --git a/app/views/sms/validate.haml b/app/views/sms/validate.haml
new file mode 100644
index 0000000..14d6eee
--- /dev/null
+++ b/app/views/sms/validate.haml
@@ -0,0 +1,15 @@
+.text-center
+  %h1= @company.name
+  %p= t('sms.header')
+  %ul.list-inline
+.row
+  .col-md-offset-4.col-md-4
+    %form{ action: '/sms/validate', method: :post }
+      .form-group
+        %label{ for: :code }= t('sms.code')
+        %input.form-control{ name: :code }
+      .form-group
+        %button.btn.btn-primary{ type: :submit }= t('sms.confirm')
+.text-center
+  %a{ href: '/' }
+    = t(:cancel)
diff --git a/config.ru b/config.ru
index 0110e58..cd633bc 100644
--- a/config.ru
+++ b/config.ru
@@ -2,6 +2,7 @@ require './config/environment'
 
 use EventsController
 use SessionsController
+use SmsController
 use VisitorsController
 use WidgetsController
 
diff --git a/config/environment.rb b/config/environment.rb
index 68de03d..2490ece 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -6,3 +6,4 @@
 Bundler.require(:default, ENV['SINATRA_ENV'])
 
 require_all 'app'
+require_all 'lib'
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 586ff23..63379f2 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,5 +1,15 @@
 en:
+  activemodel:
+    errors:
+      models:
+        sms_sender:
+          attributes:
+            phone:
+              blank: can't be blank
+              improbable_phone: is improbable
+              invalid: is invalid
   cancel: Cancel
+  errors: Form contains errors
   facebook:
     join:
       header: 'Facebook: like for continue'
@@ -7,6 +17,17 @@ en:
       header: 'Facebook: share post for continue'
       placeholder: Your comment
       share: Post to Facebook
+  sms:
+    code: Auth code
+    confirm: Confirm
+    continue: Next
+    format: 'Format:'
+    header: You have to authorize with SMS
+    phone: Mobile number
+    placeholder: 123206241212
+    success: 'Verification code has been sent on %{phone}
+
+'
   today: Today, %{time}
   twitter:
     join:
diff --git a/config/locales/ru.yml b/config/locales/ru.yml
index ea10020..3bc5d66 100644
--- a/config/locales/ru.yml
+++ b/config/locales/ru.yml
@@ -1,5 +1,15 @@
 ru:
+  activemodel:
+    errors:
+      models:
+        sms_sender:
+          attributes:
+            phone:
+              blank: не может быть пустым
+              improbable_phone: является недействительным номером
+              invalid: является недействительным номером
   cancel: Отмена
+  errors: Форма содержит ошибки
   facebook:
     join:
       header: 'Facebook: Like для продолжения'
@@ -7,6 +17,15 @@ ru:
       header: 'Facebook: поделиться для продолжения'
       placeholder: Ваше сообщение
       share: Поделиться на Facebook
+  sms:
+    code: Код авторизации
+    confirm: Подтвердить
+    continue: Продолжить
+    format: 'Формат:'
+    header: Для продолжения необходимо авторизироваться с помощью кода из sms-сообщения, полученного на ваш мобильный телефон
+    phone: Мобильный телефон
+    placeholder: 123206241212
+    success: На номер %{phone} был выслан код подтверждения
   today: Сегодня, %{time}
   twitter:
     join:
diff --git a/lib/omniauth-sms.rb b/lib/omniauth-sms.rb
new file mode 100644
index 0000000..f0e17fa
--- /dev/null
+++ b/lib/omniauth-sms.rb
@@ -0,0 +1,23 @@
+require 'omniauth'
+
+module OmniAuth
+  module Strategies
+    class Sms
+      include OmniAuth::Strategy
+
+      option :smsauth_url, '/smsauth'
+
+      def request_phase
+        redirect options.smsauth_url
+      end
+
+      uid do
+        session[options.uid_field.to_s]
+      end
+
+      info do
+        { name: uid }
+      end
+    end
+  end
+end