diff --git a/app.js b/app.js
index 03905da..5375955 100644
--- a/app.js
+++ b/app.js
@@ -4,14 +4,18 @@ let path = require("path");
 let cookieParser = require("cookie-parser");
 let logger = require("morgan");
 let sassMiddleware = require("node-sass-middleware");
+const session = require("express-session");
+const config = require("./config/config.json");
 
 let indexRouter = require("./routes/index");
 
 let app = express();
+const sessionMiddleware = session({secret: config.secret});
 
 // view engine setup
 app.set("views", path.join(__dirname, "views"));
 app.set("view engine", "pug");
+app.set("sessionMiddleware", sessionMiddleware);
 
 app.use(logger("dev"));
 app.use(express.json());
@@ -24,6 +28,11 @@ app.use(sassMiddleware({
   sourceMap: true
 }));
 app.use(express.static(path.join(__dirname, "public")));
+app.use(sessionMiddleware);
+app.use((req, res, next) => {
+  res.locals.session = req.session;
+  next();
+});
 
 app.use("/", indexRouter);
 
diff --git a/bin/www b/bin/www
index 58d685c..2c949c4 100755
--- a/bin/www
+++ b/bin/www
@@ -27,6 +27,7 @@ let server = http.createServer(app);
  */
 
 const io = require("socket.io")(server);
+io.use((socket, next) => app.get("sessionMiddleware")(socket.request, socket.request.res || {}, next));
 io.on("connection", require("../sockets"));
 
 /**
diff --git a/config/config_example.json b/config/config_example.json
index d309ce1..e0a4d47 100644
--- a/config/config_example.json
+++ b/config/config_example.json
@@ -6,5 +6,6 @@
     "host": "127.0.0.1",
     "dialect": "postgres",
     "operatorsAliases": false
-  }
+  },
+  "secret": "keyboard cat"
 }
diff --git a/package-lock.json b/package-lock.json
index 3fa0516..441850e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1042,6 +1042,33 @@
         }
       }
     },
+    "express-session": {
+      "version": "1.17.1",
+      "resolved": "https://registry.npmjs.org/express-session/-/express-session-1.17.1.tgz",
+      "integrity": "sha512-UbHwgqjxQZJiWRTMyhvWGvjBQduGCSBDhhZXYenziMFjxst5rMV+aJZ6hKPHZnPyHGsrqRICxtX8jtEbm/z36Q==",
+      "requires": {
+        "cookie": "0.4.0",
+        "cookie-signature": "1.0.6",
+        "debug": "2.6.9",
+        "depd": "~2.0.0",
+        "on-headers": "~1.0.2",
+        "parseurl": "~1.3.3",
+        "safe-buffer": "5.2.0",
+        "uid-safe": "~2.1.5"
+      },
+      "dependencies": {
+        "depd": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+          "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
+        },
+        "safe-buffer": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+          "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
+        }
+      }
+    },
     "ext": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/ext/-/ext-1.4.0.tgz",
@@ -2738,6 +2765,11 @@
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
       "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
     },
+    "random-bytes": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/random-bytes/-/random-bytes-1.0.0.tgz",
+      "integrity": "sha1-T2ih3Arli9P7lYSMMDJNt11kNgs="
+    },
     "range-parser": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
@@ -3626,6 +3658,14 @@
       "integrity": "sha1-bgkk1r2mta/jSeOabWMoUKD4grc=",
       "optional": true
     },
+    "uid-safe": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/uid-safe/-/uid-safe-2.1.5.tgz",
+      "integrity": "sha512-KPHm4VL5dDXKz01UuEd88Df+KzynaohSL9fBh096KWAxSKZQDI2uBrVqtvRM4rwrIrRRKsdLNML/lnaaVSRioA==",
+      "requires": {
+        "random-bytes": "~1.0.0"
+      }
+    },
     "umzug": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/umzug/-/umzug-2.3.0.tgz",
diff --git a/package.json b/package.json
index 04633eb..b3b2aea 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "cookie-parser": "~1.4.4",
     "debug": "~2.6.9",
     "express": "~4.16.1",
+    "express-session": "^1.17.1",
     "http-errors": "~1.6.3",
     "morgan": "~1.9.1",
     "node-sass-middleware": "0.11.0",
diff --git a/views/layout.pug b/views/layout.pug
index 1fe5414..f58a569 100644
--- a/views/layout.pug
+++ b/views/layout.pug
@@ -5,3 +5,4 @@ html
     link(rel="stylesheet", href="/stylesheets/style.css")
   body
     block content
+  script(src="/socket.io/socket.io.js")