Scan & Order A Model for Ordering in Restaurant Based on QR Code

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

Scan & Order

A Model for Ordering in Restaurant Based on QR Code

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School of Engineering and Technology, Sharda University, Greater Noida 201308, India

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Abstract: QR codes were first used in 1994 in the automotive industry in Japan. Since then and today the technology of QR

code has come a long way and is now a household name. QR code scanning has found usage in many fields and industries over

the years. One of the latest and more exciting usage of QR code was found in the restaurant business. The methodology is

simple, customers scan a QR code provided to them with their smartphones, a menu shows up, they place orders via an app on

the smartphone. In today's world where social distancing is so necessary because of the pandemic, this process can prove to be

the saving grace of the restaurant industry.

Keywords - QR Code, Restaurant management system, android app

1. Introduction

One of the things that customers hate about restaurants is the waiting time. One a typical busy restaurant day, a customer has

to first wait for a table, after settling down the customer has to wait for the server to take the order [1], then the server takes

the order to the chef and the wait for food preparations begins. After all this the server brings the order to the customers and

they can finally enjoy their food. All this waiting time gives the patron a bad experience. If there was a way to reduce the

waiting time, it would give a major boost to the entire experience.

Restaurants are also one of the worst hit industries because of the global pandemic. People are wary of restaurants because

they are afraid that they will catch the virus from the staff of the restaurant or other patrons [2]. This is causing the

restaurants to incur heavy losses.

The traditional system of restaurants needs a revamp to account for all these problems. Restaurants need a way to reduce the

waiting time as well as reduce the human contact in any way possible.

A way to tackle these issues can be the “Scan & Order” app. “Scan & Order” is a QR code-based food ordering and payment app

[3]. The user will be provided with a QR code in their table. The code can be scanned with any smartphone and will take the

customer to a menu page. With the help of this customers can order without waiters and can also pay for the food through the

app.

2. A brief study of the QR code technology

2.1 Background of QR

A QR (Quick Response) code is a scannable code encoded with data. In the case of QR codes, data (of various forms) is

converted into a unique two-dimensional arrangement of squares. When a QR code scanner is placed over those squares [4], it

decodes their marshalling back into that data’s original form.

2.2 Components of a QR code

Following are some important components of QR code

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

Figure 1: Mechanism for QR scanning

 4.1Data Modules: A simple black square on white background (color composition can change) [5]. Most of the QR code

is composed of marshalling of these data modules.

 Position Marker: Every QR code has three position markers [6]. The purpose of position markers is to help the code

scanner in identifying the position of data modules [7]. Position markers are composed of an inner eye and an outer

eye.

 Quiet Zone: Quit zone is an empty area inside which the positions markers and data modules are present [8]. Its

purpose is also easy identification of code areas by the scanner.

3. System Designing

The Scan and Order app has to be installed in the user’s smartphones. The data flow is as follows: Once the user scans the QR

code, the data will be gathered by app and sent to a server running Node JS [9]. The backend server processes and verifies the

data and queries the database. The database sends requested data back to the backend which is transferred to the application.

Figure 2: System Design Overview of Scan and Order

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

3.1 System Implementation

The flow chart of scan and order app is depicted in figure 3. First step after opening the app is OTP login. In case of successful

order [10]. After ordering, the payment menu will pop up and after successful payment, the order is redirected to the chef.

Figure 3: System Implementation of Scan and Order

3.2 Use Case diagram

The Scan and Order app will have the following functionalities as shown in figure 4: OTP login, QR code scanning, ordering

from menu, payment using UPI.

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

Figure 4: Use case diagram of scan and order

4. Methodology

4.1 Placing order without a server

In every table of the restaurant, there is a QR code unique to that restaurant. The patron requires to have a smartphone and

the “Scan & Order” app present in the phone. The patron can scan the QR code with the app [11]. After scanning the code, a

menu will be displayed in the app. The user can see details about various food items, their price etc. and place orders directly

from the app. The chef and customer have a sort of direct connection which saves time by cutting the middleman [12]. The

chef also gets orders in a timely and ordered manner which reduces the chance of preparing the wrong order.

4.2 Payment without a cashier

After the customer is done with the ordering, they can enjoy their food [13]. The last part of the cycle is payment. The “Scan &

Order” app can also handle payment of orders. The user will automatically get a bill in the app which can be paid with the help

of UPI from the app itself [14].

5. Advantages and Challenges

5.1 Advantages

 Saves time of restaurant staff

 The customer can order at their own leisure

 Hassle free electronic payments

 Reduce contact of staff and customers (Covid precautions)

 Option to rescue the restaurant workforce

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

5.2 Challenges

 An active internet connection is required for the process

 The loss of traditional restaurant face to face interactions

 At least one time contact with staff when the server brings over the food

6. Conclusion

Although there is a certain charm and nostalgia attached with the traditional system of restaurants and face to face

interactions the times and conditions today demand a change in the system. With almost everyone in the world using a

smartphone and rapid technological advancement, restaurants should make use of technology to replace or better the

traditional system.

There are many improvements that can be made in the app itself for example adding some entertainment system for

customers while they wait, still the use of such technology can greatly improve the customer’s as well as staff's experience.

There is room for improvement in the system which will breed innovation and help the restaurant managers make the

experience of both customers and staff much better.

7. References

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[2] D. Boldureanu, I. Roman, D. Sardaru, and G. G. Andruseac, “Romanian Citizens’ Attitudes and Opinions over the Course of

the Covid-19 Pandemic,'' presented at the 2020 International Conference on e-Health and Bioengineering (EHB), Oct. 2020,

doi: 10.1109/ehb50910.2020.9280207.

[3] A. Yadav, D. Yadav, S. Gupta, D. Kumar, and P. Kumar, “Online Food Court Payment System using Blockchain Technology,”

presented at the 2018 5th IEEE Uttar Pradesh Section International Conference on Electrical, Electronics and Computer

Engineering (UPCON), Nov. 2018, doi: 10.1109/upcon.2018.8596794.

[4] P.-Y. Lin and Y.-H. Chen, “QR code steganography with secret payload enhancement,” presented at the 2016 IEEE

International Conference on Multimedia & Expo Workshops (ICMEW), Jul. 2016, doi: 10.1109/icmew.2016.7574744.

[5] H. Tribak, S. Moughyt, Y. Zaz, and G. Schaefer, “Remote QR code recognition based on HOG and SVM classifiers,” presented

at the 2016 International Conference on Informatics and Computing (ICIC), 2016, doi: 10.1109/iac.2016.7905704.

[6] G. Pan, A. H. Liang, J. Liu, M. Liu, and E. X. Wang, “3-D Positioning System Based QR Code and Monocular Vision,” presented

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the 2018 IEEE/ION Position, Location and Navigation Symposium (PLANS), Apr. 2018, doi: 10.1109/plans.2018.8373516.

[18] M. Dirix and D. Heberling, “Qualitative Quiet Zone comparison using spherical near-field scanning,” presented at the 2012

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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

[9] Y.-W. Kao, G.-H. Luo, H.-T. Lin, Y.-K. Huang, and S.-M. Yuan, “Physical Access Control Based on QR Code,” presented at the

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[10] Imamah, “One Time Password (OTP) Based on Advanced Encryption Standard (AES) and Linear Congruential Generator

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[12] M. Z. H. Noor, A. A. A. Rahman, M. F. Saaid, M. S. A. M. Ali, and M. Zolkapli, “The development of Self-Service Restaurant

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