MOBILE WALLETS AND CONSUMER SPENDING IN SINGAPORE: AGARWAL et al. REVISITED

2021 ◽  
pp. 1-17
Author(s):  
LEO VAN HOVE
Keyword(s):  
Credit Card ◽  
Alternative Explanation ◽  
Spillover Effect ◽  
Qr Code ◽  
Quick Response ◽  
Qr Codes ◽  
Mobile Payments ◽  
Positive Spillover ◽  
Entrepreneurial Growth ◽  
The Impact

Agarwal et al. ( 2019 ). Mobile wallet and entrepreneurial growth. AEA Papers and Proceedings, 109, 48–53 analyze the impact of the introduction of quick response (QR) codes for mobile payments in Singapore. They find that this not only resulted in a significant increase in the use of mobile wallets, but that there was also a positive spillover effect on debit and credit card payments — in particular at small and new businesses. This note argues that the increase in card sales cannot have been driven by the QR code technology. I also proffer an alternative explanation, namely, that Agarwal et al. simply capture the concurrent increase in popularity of contactless cards.

scholarly journals ART-UP: A Novel Method for Generating Scanning-Robust Aesthetic QR Codes

2021 ◽  
Vol 17 (1) ◽  
pp. 1-23
Author(s):  
Mingliang Xu ◽  
Qingfeng Li ◽  
Jianwei Niu ◽  
Hao Su ◽  
Xiting Liu ◽  
...  
Keyword(s):  
State Of The Art ◽  
Visual Quality ◽  
Qr Code ◽  
Quick Response ◽  
Estimation Model ◽  
Qr Codes ◽  
Excellent Performance ◽  
Novel Method ◽  
Coarse To Fine

Quick response (QR) codes are usually scanned in different environments, so they must be robust to variations in illumination, scale, coverage, and camera angles. Aesthetic QR codes improve the visual quality, but subtle changes in their appearance may cause scanning failure. In this article, a new method to generate scanning-robust aesthetic QR codes is proposed, which is based on a module-based scanning probability estimation model that can effectively balance the tradeoff between visual quality and scanning robustness. Our method locally adjusts the luminance of each module by estimating the probability of successful sampling. The approach adopts the hierarchical, coarse-to-fine strategy to enhance the visual quality of aesthetic QR codes, which sequentially generate the following three codes: a binary aesthetic QR code, a grayscale aesthetic QR code, and the final color aesthetic QR code. Our approach also can be used to create QR codes with different visual styles by adjusting some initialization parameters. User surveys and decoding experiments were adopted for evaluating our method compared with state-of-the-art algorithms, which indicates that the proposed approach has excellent performance in terms of both visual quality and scanning robustness.

scholarly journals Implementation for Quick Response Code

2019 ◽  
pp. 249-252
Author(s):  
K. Ravikumar ◽  
R. Geetha
Keyword(s):  
Mobile Devices ◽  
Mobile Phones ◽  
Teaching And Learning ◽  
Qr Code ◽  
Quick Response ◽  
Qr Codes ◽  
Response Code ◽  
Quick Response Code ◽  
The People ◽  
Identity Card

Quick Response (QR) codes are versatile. a chunk of long trilingual text, a connected URL, an automatic SMS message, an identity card or simply regarding any data is embedded into the two-dimensional barcode. as well as moderate equipped mobile devices, QR Codes will connect the users to the data quickly and simply. The operations to retrieve or store QR codes are unbelievably easy and fast, and with mobile devices, build them the best academic tools for teaching and learning. QR codes are all over and most of the people have mobile phones equipped with QR code readers. though QR codes existed for over fifteen years, there arent such a lot of analysis applications during this space.

scholarly journals Animated Two-Dimensional Barcode Generation Using Optimization Algorithms – Redesign of Formulation, Operator, and Quality Evaluation

2009 ◽  
Vol 13 (3) ◽  
pp. 245-254 ◽  
Author(s):  
Satoshi Ono ◽  
◽  
Kensuke Morinaga ◽  
Shigeru Nakayama
Keyword(s):  
Code Generation ◽  
Optimization Problem ◽  
Quality Evaluation ◽  
Qr Code ◽  
Two Dimensional ◽  
Quick Response ◽  
Qr Codes ◽  
Running Head ◽  
Generation Problem ◽  
Font Color

To improve on our previously proposed but problem-plagued innovation for generating animated and illustrated Quick Response (QR) codes, this paper proposes a method which formulates the animated QR code generation problem as an optimization problem rather than as a set of still QR code decoration problems. The proposed method also uses optimization operators designed for this problem and quality evaluation to maintain natural, smooth movement. Experiments demonstrate that the proposed method can generate animated QR codes involve a maximum of eight illustrations moving inside the code which maintaining decoding feasibility and smooth illustration movement.<FONT color="red" size="3">Erratum<br /></FONT> <FONT color="red" size="2">Due to a wrong manipulation during the correction of the proofs of the above paper, the running head title (short title) was incorrect. The correct running head title should have read as "Animated Two–Dimensional Barcode Generation."</FONT>

Impact of In-Store Promotion and Spillover Effect on Private Label Introduction

2019 ◽  
Vol 11 (2) ◽  
pp. 96-112 ◽  
Author(s):  
Yingjue Zhou ◽  
Tieming Liu ◽  
Gangshu Cai
Keyword(s):  
Supply Chain ◽  
Spillover Effect ◽  
The Other ◽  
Private Label ◽  
National Brand ◽  
Label Product ◽  
Horizontal Competition ◽  
Positive Spillover ◽  
The Impact ◽  
Brand Product

In this paper, the authors investigate the impact of in-store promotion and its spillover effect on private label introductions. Studying different retail supply chain scenarios in which the retailer carrying a national brand may introduce its own private label product and promote either the national brand or the private label inside the store, they find the in-store promotion on one product has a positive spillover effect on the other product. Without in-store promotion and spillover effect, the conventional wisdom indicates that, in a retail supply chain, the national brand manufacturer will be negatively affected by the introduction of a private label product. With in-store promotion and spillover effect, however, the national brand manufacturer can actually benefit from the private label introduction. When the spillover from national brand to private label is high, the retailer prefers to promote the national brand product. When the spillover from private label to national brand is high, promoting the private label product can also benefit the national brand manufacturer. With a symmetric spillover rate, the national brand manufacturer can still benefit from the private label introduction, as long as the retailer promotes the national brand product, the horizontal competition is not intense, or the private label product quality is sufficiently low.

scholarly journals XOR-ed visual secret sharing scheme with robust and meaningful shadows based on QR codes

2019 ◽  
Vol 79 (9-10) ◽  
pp. 5719-5741 ◽  
Author(s):  
Longdan Tan ◽  
Yuliang Lu ◽  
Xuehu Yan ◽  
Lintao Liu ◽  
Xuan Zhou
Keyword(s):  
Error Correction ◽  
Secret Sharing ◽  
Qr Code ◽  
Quick Response ◽  
Salt And Pepper Noise ◽  
Visual Secret Sharing ◽  
Qr Codes ◽  
Secret Image ◽  
Sharing Scheme ◽  
Salt And Pepper

AbstractQuick response (QR) codes are becoming increasingly popular in various areas of life due to the advantages of the error correction capacity, the ability to be scanned quickly and the capacity to contain meaningful content. The distribution of dark and light modules of a QR code looks random, but the content of a code can be decoded by a standard QR reader. Thus, a QR code is often used in combination with visual secret sharing (VSS) to generate meaningful shadows. There may be some losses in the process of distribution and preservation of the shadows. To recover secret images with high quality, it is necessary to consider the scheme’s robustness. However, few studies examine robustness of VSS combined with QR codes. In this paper, we propose a robust (k, n)-threshold XOR-ed VSS (XVSS) scheme based on a QR code with the error correction ability. Compared with OR-ed VSS (OVSS), XVSS can recover the secret image losslessly, and the amount of computation needed is low. Since the standard QR encoder does not check if the padding codewords are correct during the encoding phase, we replace padding codewords by initial shadows shared from the secret image using XVSS to generate QR code shadows. As a result, the shadows can be decoded normally, and their error correction abilities are preserved. Once all the shadows have been collected, the secret image can be recovered losslessly. More importantly, if some conventional image attacks, including rotation, JPEG compression, Gaussian noise, salt-and-pepper noise, cropping, resizing, and even the addition of camera and screen noises are performed on the shadows, the secret image can still be recovered. The experimental results and comparisons demonstrate the effectiveness of our scheme.

scholarly journals A Survey on Secrete Communication through QR Code Steganography for Military Application

2022 ◽  
Vol 10 (1) ◽  
pp. 728-731
Author(s):  
Nikita Bhoskar
Keyword(s):  
Secret Sharing ◽  
Secret Message ◽  
Qr Code ◽  
Secret Sharing Scheme ◽  
Quick Response ◽  
Visual Secret Sharing ◽  
Qr Codes ◽  
Response Code ◽  
Sharing Scheme ◽  
Quick Response Code

Abstract: The quick response code (QR) has become most popular barcode because of its larger data capacity and increased damage resistance. Barcode scanners can easily extract information hidden in the QR code when scanning data forms. However, some confidential data stored directly in QR codes are not secure in real world QR apps. To proposed approach to visual secret sharing scheme to encode a secret QR code into distinct shares. In assessment with other techniques, the shares in proposed scheme are valid QR codes that may be decoded with some unique that means of a trendy QR code reader, so that escaping increases suspicious attackers. An existing sharing technique is subjected to loss of security. On this premise, consider the strategy for (k, n) get to structures by using the (k, k) sharing occurrence on each k-member subset dependent on specific relationship. In addition, the secret message is recovered with the aid of XOR-ing the qualified shares. This operation which can effortlessly be achieved the use of smartphones or different QR scanning gadgets. Contribution work is, working on optimal partitioning methods and compare original message with shared message using hashing techniques. Keywords: Hashing, partitioning algorithm, error correction capacity, high security, Quick Response code, visual secret sharing scheme

QR codes as a tool for receiving feedback about guests’ satisfaction at destinations

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nikola Vuksanović ◽  
Dunja Demirović Bajrami ◽  
Marko D. Petrović ◽  
Elena M. Grigorieva
Keyword(s):  
Convergent Validity ◽  
Economic Status ◽  
Qr Code ◽  
Qr Codes ◽  
Content Type ◽  
Proposed Model ◽  
Marketing Tool ◽  
The Impact ◽  
Positive Effect ◽  
Insight Into

Purpose The purpose of this study is to examine the impact of the use of Quick Response (QR) code application among the tourists on their satisfaction at a destination regarding information about restaurants’ offer. Design/methodology/approach A quantitative method was implemented in this study. The field study was conducted in 2019 in the two most visited urban destinations in Serbia. The proposed model was examined using partial least squares, and the model fits, composite reliability and convergent validity were assessed. The direction and significance of the relationships were determined by testing all of the hypotheses. Findings The results showed that there was a positive effect of using QR codes. However, the study showed that a QR code cannot completely affect the overall satisfaction at a destination. The analysis of the control variables (age and economic status) showed that individual, demographic and economic factors must be taken into consideration to predict individuals’ behaviour. Research limitations/implications To enable the generalization of the results, it is advised to conduct research on cross-cultural levels. Future studies related to the topic could be conveyed in other forms of tourism, as well as in other industries, which would provide a better insight into the application of this technology in the future. Originality/value The study enables managers of tourism businesses, especially in hospitality, to better understand the importance of the use of a QR code at a destination as an important marketing tool for getting information, and thus to satisfy guests’ expectations.

scholarly journals Recognition of Perspective Distorted QR Codes with a Partially Damaged Finder Pattern in Real Scene Images

2020 ◽  
Vol 10 (21) ◽  
pp. 7814
Author(s):  
Ladislav Karrach ◽  
Elena Pivarčiová ◽  
Pavol Bozek
Keyword(s):  
Mobile Robots ◽  
Qr Code ◽  
Two Dimensional ◽  
Quick Response ◽  
Image Binarization ◽  
Computationally Efficient ◽  
Qr Codes ◽  
Operational Space ◽  
Perspective Distortion ◽  
Real Scene

QR (Quick Response) codes are one of the most famous types of two-dimensional (2D) matrix barcodes, which are the descendants of well-known 1D barcodes. The mobile robots which move in certain operational space can use information and landmarks from environment for navigation and such information may be provided by QR Codes. We have proposed algorithm, which localizes a QR Code in an image in a few sequential steps. We start with image binarization, then we continue with QR Code localization, where we utilize characteristic Finder Patterns, which are located in three corners of a QR Code, and finally we identify perspective distortion. The presented algorithm is able to deal with a damaged Finder Pattern, works well for low-resolution images and is computationally efficient.

scholarly journals Exploring the Motivation of Pupils towards the Implementation of QR Codes in Pronunciation Learning

2021 ◽  
Vol 10 (1) ◽  
pp. 204
Author(s):  
Kim Hua Tan ◽  
Kar Mei Chee
Keyword(s):  
Sense Of Belonging ◽  
Qr Code ◽  
Quick Response ◽  
Qr Codes ◽  
Code Model ◽  
Audio Recordings ◽  
Before And After ◽  
The Difference ◽  
Perceived Choice ◽  
Survey Questionnaires

The implementation of Quick Response (QR) codes in education has become increasingly popular. Previous studies proved that it can increase the motivation of pupils in learning. Hence, this research investigates the difference of pupils’ motivation levels in learning pronunciation after the implementation of QR codes. We examine the motivation of pupils in terms of four aspects: interest, competence, perceived choice and sense of belonging. Accordingly, we propose a QR code model, which is linked to Google Forms that contain audio recordings for pronunciation practice. With the proposed QR code activity, the pupils can record their versions of audio recordings of pronunciation and submit to their teacher for feedback. The participants are 90 year 4 pupils from a sub-urban Chinese primary school in Johor. We employ a pre-experimental research design in this research. We collect our data by using 2 research instruments: survey questionnaires and observation checklist. We administer the survey questionnaires before and after the implementation of QR codes to find out the changes in the motivation of pupils. We also utilise an observation checklist to examine the attitude of the participants during the implementation of QR codes in pronunciation learning. The findings of this research reveal a significant change in the pupils’ motivation towards the implementation of QR codes in pronunciation learning. Specifically, we find an increment of motivation in learning pronunciation as the pupils show interests in learning.   Received: 6 October 2020 / Accepted: 12 December 2020 / Published: 17 January 2021

scholarly journals Implementation of Cargo Image System Via QR Code for Export Containers: Case Study of the Keelung Port

2020 ◽  
Vol 54 (1) ◽  
pp. 97-109
Author(s):  
Ki-Yin Chang ◽  
Chung-Ping Liu ◽  
Mei-Lian Huang ◽  
Jian-Hung Shen ◽  
Ji-Feng Ding
Keyword(s):  
Qr Code ◽  
Quick Response ◽  
Qr Codes ◽  
Image System ◽  
X Ray ◽  
Examination Performance ◽  
Simulation Results ◽  
The Doors

AbstractThis article proposes a novel implementation of a cloud cargo image system via Quick Response (QR) codes to reduce the amount and cost of manual unpacking examinations for export containers. First, individual cargo pictures for different owners are taken before loading. After loading, cargo scenario photos are also taken right before sealing the doors. According to the customs inspection procedure, all containers selected for checks were X-rayed. If cargo X-ray images cannot be identified by customs, the container must be unpacked for examination. In this study, customs officers can access the cargo interior photos with a voucher via its QR code. By comparing X-ray images and cargo scenario photos, the officers verify whether the inspection cargo and declared goods are consistent. Thus, the amount and cost of manual unpacking examination can be substantially reduced. Simulation results showed that, for the inspectors using the X-ray scanner with this cargo image system, overall examination performance for export containers increased by about 32%. This study further expects to provide results and findings to relevant stakeholders for reference.

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