Tutorial: Barcodes, QR codes, and RFID tags

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Friday, May 15, 2020PrintSubscribe
Tutorial: Barcodes, QR codes, and RFID tags
Learn to create the Order Entry Form that works offline and online. The form will handle barcodes, QR codes, and RFID tags. The tutorial explains how to calculate the default values, extended price, and order total.

We start with the live demo of the app that will be created in this tutorial. Next we proceed to create the Order Entry Form shown in the demo and make it work in online and offline modes. The next iteration of the app is using UI Automation to implement the barcode processing for Product inventory, QR-code processing for Customer Loyalty Cards, RFID tags to handle Employee Access Cards. We bind it all together for Hands-Free Order Entry. The final part of the tutorial concentrates on creating the Kiosk-style presentation for the Order Entry Form.

Part 1 - Demo (30 minutes)

03:20 - Introduction
07:18 - Barcodes and Product Inventory
09:28 - QR codes and Customer Loyalty Cards
11:05 - RFID Access Cards and Employees
13:02 - Entering order line items with the barcode scanner
15:40 - Linking loyalty cards with the QR code scanner
16:51 - Linking employee to the order with the RFID reader
20:36 - Entering the lines items in “inventory” mode
24:38 - Kiosk presentation of Order Entry Form

Part 2 - Building Order Entry Form (1 hour 42 minutes)

0:32:49 - Introduction
0:33:16 - Database Diagram of Order Entry Form
0:35:58 - Configuring Sample Database
0:40:20 - Creating data models for Orders, Customers, Employees, and Shippers
0:48:52 - Creating data models for Order Details, Products, Categories, and Suppliers
0:54:36 - Modifying Menu
0:55:35 - Linking Order and Order Details
1:06:20 - Calculating default values with SQL business rules
1:09:08 - Calculating default values with JavaScript business rules
1:15:25 - Copying the Unit Price
1:18:24 - Calculating Extended Price with JavaScript
1:32:23 - Copying the shipping information from the Customer to the Order
1:37:14 - Calculating the Order Total
2:00:32 - Taking Orders in offline mode
2:12:25 - Syncing offline orders with the “online” database

Part 3 - Barcode Input and UI Automation (3 hours)

2:15:03 - Enabling the barcode input
2:26:45 - Simulating scanning of a barcode
2:33:20 - Low-level barcode processing
2:40:56 - Introducing UI Automation
2:42:33 - Integrating barcodes in the Product Inventory
3:20:09 - Integrating barcodes and QR-codes to handle Customer  Loyalty Cards
3:35:46 - Integrating RFID Access Cards to identify the Employees
3:46:55 - Using Data Queries during UI Automation
3:54:45 - Implementing Hands-Free Order Entry
5:08:22 - Taking orders in offline mode with barcodes, QR codes, and RFID tags

Part 4 - Kiosk UI (2 hours)

5:14:33 - Creating a Kiosk-style Order Entry presentation
6:11:55 - Adding Numeric Pad for parameter input
6:34:20 - Displaying date selector and pick list
6:43:35 - Making Order Entry Kiosk responsive
7:14:26 - Taking orders in the offline Kiosk

The source code produced in the tutorial is available at https://codeontime.com/blog/2020/05/hello-barcodes-sample-code.

The following equipment was used in the tutorial:

Inateck Bluetooth Barcode Scanner

Koolertron Wireless 2D Barcode Scanner

RFID Reader 125KHz