diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d74b38b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,51 @@
+# lscanbot
+
+An opensource telegram bot written in Node.js to scan your LAN.
+
+
+## Usage
+
+**lscanbot** scans devices with arp-scan, showing only devices registered in the inventory.
+
+Before scanning, you must insert the devices into the inventory (to track it):
+> /add [Device name] ; [Owner] ; [MAC Address]
+
+(use `;` to split arguments)
+
+
+After that, you can scan:
+>/scan
+
+
+
+It will send back the devices connected to your network.
+
+## Installation
+
+In order to use this bot is required that the code is hosted on a linux system connected to your LAN (Raspberry Pi would be a good choice)
+
+
+### Prerequisites
+- Node.js
+- npm
+- GNU/Linux
+
+### Step by step
+1. Install **arp-scan** package on your linux system. 
+2. Configure arp-scan to use without sudo.
+(`chmod u+s`)
+3. Clone this repository on your system.
+4. Install dependeces with `npm install`.
+5. Create new bot with BotFather on Telegram.
+6. Insert your **token** (app.token) into `config.json`.
+7. Insert your **TelegramID** (app.authorizedUsers) into `config.json`.
+8. Insert your **network device** (scanner.interface) int `config.json`.
+8. Start with`npm start`.
+
+
+### License
+
+GPLv3
+
+---
+Made with ❤️ by Francesco Esposito ([@f3sposito](https://github.com/f3sposito))
\ No newline at end of file
diff --git a/config.json b/config.json
new file mode 100644
index 0000000..d45119c
--- /dev/null
+++ b/config.json
@@ -0,0 +1,26 @@
+{
+  "app": {
+    "name": "lscanbot",
+    "token": "--- insert your token here ---",
+    "authorizedUsers": [
+      123456
+    ]
+  },
+  "scanner": {
+    "command": "arp-scan",
+    "args": [
+      "-l"
+    ],
+    "interface": "wlan0",
+    "sudo": false
+  },
+  "database": {
+    "filename": "data.db"
+  },
+  "logger": {
+    "errorLogging": {
+      "filename": "error.log",
+      "level": "error"
+    }
+  }
+}
\ No newline at end of file
diff --git a/db.js b/db.js
new file mode 100644
index 0000000..655488d
--- /dev/null
+++ b/db.js
@@ -0,0 +1,96 @@
+const sqlite3 = require('sqlite3').verbose();
+const fs = require('fs');
+const appConfig = require('./config.json');
+
+function connectDB() {
+  const db = new sqlite3.Database('data.db');
+  return db;
+}
+
+function initDB() {
+  const db = connectDB();
+  db.run('CREATE TABLE inventory (mac TEXT, device TEXT, owner TEXT)');
+  db.run(`CREATE TABLE scan (uid INT NOT NULL, mac TEXT NOT NULL,
+      PRIMARY KEY (uid,mac))`);
+}
+
+function checkDB() {
+  fs.stat(appConfig.database.filename, (err, stats) => {
+    if (err) {
+      initDB();
+    }
+    return stats;
+  });
+}
+
+function initScan(uid) {
+  const db = connectDB();
+  db.run('DELETE FROM scan WHERE uid = $uid', { $uid: uid });
+}
+
+function addDevices(uid, data) {
+  if (data) {
+    const db = connectDB();
+    data.forEach((element) => {
+      db.run('INSERT OR IGNORE INTO scan (uid,mac) VALUES ($uid, $mac)', {
+        $uid: uid,
+        $mac: element.mac,
+      });
+    });
+  }
+}
+
+function getDevices(uid) {
+  const db = connectDB();
+  const sql = `SELECT
+    inventory.device, inventory.owner, inventory.mac
+    FROM scan,
+    inventory
+    WHERE scan.mac = inventory.mac
+    AND uid = ?`; // match scan -> inventory (inner join)
+
+  return new Promise((resolve, reject) => {
+    db.all(sql, [uid], (err, rows) => {
+      if (err) {
+        return reject(err);
+      }
+      return resolve(rows);
+    });
+  });
+}
+
+function getInventory() {
+  const db = connectDB();
+  const sql = 'SELECT device, owner, mac FROM inventory';
+
+  return new Promise((resolve, reject) => {
+    db.all(sql, [], (err, rows) => {
+      if (err) {
+        return reject(err);
+      }
+      return resolve(rows);
+    });
+  });
+}
+
+function addDeviceToInventory(data) {
+  const db = connectDB();
+  db.run('INSERT INTO inventory VALUES ($mac, $device, $owner)', {
+    $mac: data.mac,
+    $device: data.device,
+    $owner: data.owner,
+  });
+}
+
+function removeDeviceFromInventory(mac) {
+  const db = connectDB();
+  db.run('DELETE FROM inventory WHERE mac = $mac', { $mac: mac });
+}
+
+module.exports.checkDB = checkDB;
+module.exports.initScan = initScan;
+module.exports.addDevices = addDevices;
+module.exports.getDevices = getDevices;
+module.exports.getInventory = getInventory;
+module.exports.addDeviceToInventory = addDeviceToInventory;
+module.exports.removeDeviceFromInventory = removeDeviceFromInventory;
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..a5b5790
--- /dev/null
+++ b/index.js
@@ -0,0 +1,80 @@
+const TeleBot = require('telebot');
+const appConfig = require('./config.json');
+const scanner = require('./scanner.js');
+const utils = require('./utils.js');
+const logger = require('./logger.js');
+
+const bot = new TeleBot(appConfig.app.token);
+
+bot.on('/start', (msg) => {
+  bot.sendMessage(msg.from.id, utils.templateStart(), { parseMode: 'Markdown' });
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    bot.event('/help', msg);
+  } else {
+    bot.sendMessage(msg.from.id, utils.templateUnauthorizedUser(), { parseMode: 'Markdown' });
+  }
+});
+
+bot.on('/help', (msg) => {
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    bot.sendMessage(msg.from.id, utils.templateHelp(), { parseMode: 'Markdown' });
+  }
+});
+
+bot.on('/scan', (msg) => {
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    scanner.scanNetwork(msg.from.id)
+      .then(() => {
+        scanner.getDevicesNetwork(msg.from.id)
+          .then((devices) => {
+            bot.sendMessage(msg.from.id, utils.templateDevicesList(devices), { parseMode: 'Markdown' });
+          })
+          .catch((err) => {
+            msg.reply.text('Error, check the error.log');
+            logger.logError(err);
+          });
+      })
+      .catch((err) => {
+        msg.reply.text('Error, check the error.log');
+        logger.logError(err);
+      });
+  }
+});
+
+bot.on('/inventory', (msg) => {
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    scanner.getInventoryNetwork()
+      .then((inventory) => {
+        bot.sendMessage(msg.from.id, utils.templateInventoryList(inventory), { parseMode: 'Markdown' });
+      })
+      .catch((err) => {
+        msg.reply.text('Error, check the error.log');
+        logger.logError(err);
+      });
+  }
+});
+
+bot.on(/^\/add (.+)$/, (msg, props) => {
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    const textArgs = props.match[1];
+    const arrArgs = textArgs.split(';').map(item => item.trim());
+    scanner.addDeviceToTrack(arrArgs);
+  }
+});
+
+bot.on(/^\/remove (.+)$/, (msg, props) => {
+  if (utils.isAuthorizedUser(msg.from.id)) {
+    const textArgs = props.match[1];
+    const arrArgs = textArgs.split(';').map(item => item.trim());
+    scanner.removeDeviceToTrack(arrArgs[0]);
+  }
+});
+
+bot.on('/getUID', (msg) => {
+  msg.reply.text(`⚠️ UID: ${msg.from.id}`);
+});
+
+scanner.initScannerDB();
+
+// bot start
+bot.start();
diff --git a/logger.js b/logger.js
new file mode 100644
index 0000000..ea1578c
--- /dev/null
+++ b/logger.js
@@ -0,0 +1,27 @@
+const bunyan = require('bunyan');
+const appConfig = require('./config.json');
+
+const log = bunyan.createLogger({
+  name: appConfig.app.name,
+  streams: [
+    {
+      level: 'error',
+      path: appConfig.logger.errorLogging.filename,
+    },
+    {
+      level: 'info',
+      stream: process.stdout,
+    },
+  ],
+});
+
+function logError(msg) {
+  log.error(msg);
+}
+
+function logInfo(msg) {
+  log.info(msg);
+}
+
+module.exports.logError = logError;
+module.exports.logInfo = logInfo;
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..ec6271f
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2387 @@
+{
+  "name": "lscanbot",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
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+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.0.0"
+      }
+    },
+    "@babel/highlight": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
+      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.0",
+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
+      }
+    },
+    "abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
+    },
+    "acorn": {
+      "version": "5.7.3",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
+      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "dev": true
+    },
+    "acorn-jsx": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-4.1.1.tgz",
+      "integrity": "sha512-JY+iV6r+cO21KtntVvFkD+iqjtdpRUpGqKWgfkCdZq1R+kbreEl8EcdcJR4SmiIgsIQT33s6QzheQ9a275Q8xw==",
+      "dev": true,
+      "requires": {
+        "acorn": "^5.0.3"
+      }
+    },
+    "ajv": {
+      "version": "5.5.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
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+    },
+    "are-we-there-yet": {
+      "version": "1.1.5",
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+      "requires": {
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+        "readable-stream": "^2.0.6"
+      }
+    },
+    "argparse": {
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+      "dev": true,
+      "requires": {
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+    "arpscan": {
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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..3457c0d
--- /dev/null
+++ b/package.json
@@ -0,0 +1,33 @@
+{
+  "name": "lscanbot",
+  "version": "1.0.0",
+  "description": "A telegram bot to scan your LAN.",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "lint": "eslint .",
+    "start": "node index.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/f3sposito/lscanbot.git"
+  },
+  "author": "f3sposito",
+  "license": "GPL-3.0",
+  "bugs": {
+    "url": "https://github.com/f3sposito/lscanbot/issues"
+  },
+  "homepage": "https://github.com/f3sposito/lscanbot#readme",
+  "dependencies": {
+    "arpscan": "^0.6.0",
+    "bunyan": "^1.8.12",
+    "network-list": "^1.1.5",
+    "sqlite3": "^4.0.2",
+    "telebot": "^1.2.6"
+  },
+  "devDependencies": {
+    "eslint": "^5.6.0",
+    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-plugin-import": "^2.14.0"
+  }
+}
diff --git a/scanner.js b/scanner.js
new file mode 100644
index 0000000..638bec3
--- /dev/null
+++ b/scanner.js
@@ -0,0 +1,77 @@
+const arpScanner = require('arpscan/promise');
+const appConfig = require('./config.json');
+const db = require('./db');
+
+function scannerResults(data) {
+  return data;
+}
+
+function returnDevices(data) {
+  return data;
+}
+
+function returnDevicesError(err) {
+  return err;
+}
+
+function returnInventory(data) {
+  return data;
+}
+
+function returnInventoryError(err) {
+  return err;
+}
+
+function scannerError(err) {
+  return err;
+}
+
+function scanNetwork(userId) {
+  db.initScan(userId);
+  return (
+    arpScanner(appConfig.scanner)
+      .then(scannerResults)
+      .then(data => db.addDevices(userId, data))
+      .catch(scannerError)
+  );
+}
+
+function getDevicesNetwork(userId) {
+  return (db.getDevices(userId)
+    .then(returnDevices)
+    .catch(returnDevicesError)
+  );
+}
+
+function getInventoryNetwork() {
+  return (
+    db.getInventory()
+      .then(returnInventory)
+      .catch(returnInventoryError)
+  );
+}
+
+// wrapper DB
+function initScannerDB() {
+  db.checkDB();
+}
+
+function addDeviceToTrack(data) {
+  const devArg = {
+    device: data[0],
+    owner: data[1],
+    mac: data[2],
+  };
+  db.addDeviceToInventory(devArg);
+}
+
+function removeDeviceToTrack(mac) {
+  db.removeDeviceFromInventory(mac);
+}
+
+module.exports.initScannerDB = initScannerDB;
+module.exports.scanNetwork = scanNetwork;
+module.exports.getDevicesNetwork = getDevicesNetwork;
+module.exports.getInventoryNetwork = getInventoryNetwork;
+module.exports.addDeviceToTrack = addDeviceToTrack;
+module.exports.removeDeviceToTrack = removeDeviceToTrack;
diff --git a/utils.js b/utils.js
new file mode 100644
index 0000000..a150c30
--- /dev/null
+++ b/utils.js
@@ -0,0 +1,53 @@
+const appConfig = require('./config.json');
+
+function isAuthorizedUser(userId) {
+  return appConfig.app.authorizedUsers.includes(userId);
+}
+
+function templateStart() {
+  const msg = `* Welcome to ${appConfig.app.name} 📱📡*\n 
+A bot to find devices on your network. \n
+Made with ❤️ by @f3sposito  `;
+  return msg;
+}
+
+function templateUnauthorizedUser() {
+  const msg = `Unauthorized user. 🤖  \n
+Clone the repository https://github.com/f3sposito/lscanbot 
+and run the bot on your local network. 😎`;
+  return msg;
+}
+
+function templateHelp() {
+  const msg = `📃 * ${appConfig.app.name} commands*: \n
+  /help - view commands.
+  /scan - view connected devices.
+  /inventory - view the inventory.
+  /add - add device to track.
+  /remove - remove device to track.`;
+  return msg;
+}
+
+function templateDevicesList(data) {
+  let devices = '📡  Devices available:  \n\n';
+  data.forEach((elem) => {
+    devices += `----- \n 📱 * ${elem.device} * \n 👉 _ ${elem.owner} _ \n \n `;
+  });
+  return devices;
+}
+
+function templateInventoryList(data) {
+  let inventory = '🗃 Inventory: \n \n';
+  data.forEach((elem) => {
+    inventory += `----- \n 📱 * ${elem.device} * \n 👉 _ ${elem.owner} _ 
+ 🔗 ${elem.mac} \n \n`;
+  });
+  return inventory;
+}
+
+module.exports.isAuthorizedUser = isAuthorizedUser;
+module.exports.templateStart = templateStart;
+module.exports.templateHelp = templateHelp;
+module.exports.templateUnauthorizedUser = templateUnauthorizedUser;
+module.exports.templateDevicesList = templateDevicesList;
+module.exports.templateInventoryList = templateInventoryList;