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Kharisma Tech
Published by Sekolah Tinggi Manajemen Informatika dan Komputer Kharisma
ISSN : 19072317     EISSN : 28100344     DOI : https://doi.org/10.55645/kharismatech.v17i1
Core Subject : Science, Engineering,
Computer Science & IT Engineering
Jurnal Ilmu Komputer merupakan jurnal yang menampung hasil penelitian di bidang informatika dan sistem informasi, mencakup : - Sistem Informasi - Informatika - Teknologi Informasi - Ilmu Komputer - Software Engineering
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 160 Documents
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ANALISIS USABILITY USER INTERFACE MENGGUNAKAN METODE USABILITY METRIK PADA APLIKASI VIRCLE Hosana, Vionita; Mohammad Sofyan S. Thayf; Renny, Renny
KHARISMA Tech Vol 19 No 2 (2024): Jurnal KHARISMATech
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v19i2.481

Abstract

This research aims to analyze the usability of the user interface in the VirCle application using the usability metric method. Data were collected through observation testing, questionnaires, and interviews. The research results indicate problems in task success, particularly in the photo uploading process that requires a description before posting. Although some users exceeded the predetermined time in the time on task, the overall required time is relatively short. The error rate is low, only around 4%. The System Usability Scale (SUS) questionnaire results show an average score of 75, which falls into the "Good" category. The interview results obtained positive user responses, although some problems were identified. Overall, the VirCle application has good potential and usability, with some improvements needed, especially regarding photo description filling and toolbar icons. This research is expected to contribute to application developers in improving the usability of VirCle and providing a better user experience.
ANALISIS TINGKAT KEPUASAN PENGGUNA SHOPEE PAYLATER MENGGUNAKAN METODE USER EXPERIENCE QUESTIONARE. Tandiarny, Yessi; Afifah; Yeni Saharaeni
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.505

Abstract

Penelitian ini bertujuan untuk mengeksplorasi pengalaman pengguna terhadap fitur Shopee PaLater melalui analisa menggunakan User Experience Questionnaire (UEQ). Penelitian ini mengevaluasi tingkat kepuasan pengguna terhadap Shopee PayLater menggunakan metode User Experience Questionnaire (UEQ). Dalam metode UEQ sendiri memiliki 6 skala pengukuran yakni: Attractiveness, Persipicuity, Efficiency, Dependability, Stimulation, dan Novelty. Hasil analisis menunjukkan bahwa fitur Shopee Paylater mendapat penilaian positif dari pengguna, dengan aspek kualitas pragmatis seperti kejelasan, efisiensi, dan keandalan. Serta aspek kualitas hedonis seperti daya tarik, simulasi, dan kebaruan dinilai baik oleh responden, Implikasi dari temuan ini menyoroti pentingnya pengembangan fitur berdasarkan pengalaman pengguna yang memadai dalam konteks paltform e-commerce. Dengan penilaian positif dari pengguna. Fitur Shopee PayLater memiliki potensi untuk meningkatkan daya tarik dan kegunaannya dalam membantu pengguna dalam proses pembayaran online. Temuan ini juga memberikan pandangan yang berharga bagi pengembang produk dan penyedia layanan untuk terus meningkatkan fitur Shopee PayLater, serta mengembangkan strategi yang lebih baik dalam menyediakan pengalaman pengguna yang memuaskan dan relevan di pasar yang semakin kompetitif.
RE-DESIGN SISTEM KATEGORI PADA STARTUP WARSHOP DENGAN METODE USER CENTERED DESIGN Antoinette, Cheriel Leily; Marlina; Mohammad Sofyan S. Thayf
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.521

Abstract

This study redesigns the category feature interface on the WarShop application using the user-centered design method to improve the user experience. The goal is to make it easier for users to find the products they want specifically and quickly. Data was obtained through interviews and observations of 10 WarShop users, where 9 users felt that the existing category features were not specific, causing users to take longer to find the products they wanted. The user-centered design method was chosen because it involves users from the beginning of the design process, resulting in a better interface that meets user needs. This interface design resulted in a more specific category feature that helps users find items directly according to the category they are looking for, and provides recommendations for similar products based on the product being searched for using keywords or the product being displayed. After the redesign, an evaluation was carried out using testing with the metrics task success, time on task, and error metrics with five users who had been previously interviewed, based on research indicating that the majority of usability issues can be found by the first five users tested. There were no problems found in the task success test and the error test resulted in an average error rate for all tasks of 0%, while in the time on task, some users exceeded the time limit. However, this is because users were interested in other products displayed based on category and recommendations.
IMPLEMENTASI ALGORITMA RC4+ PADA KEAMANAN SISTEM KOMUNIKASI CHATTING PADA WEBSITE SAHEB Kumala, jericho; Zaman, Baizul; Bahri, Syamsul
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.528

Abstract

Data security in online communication is a crucial issue, especially in applications that handle sensitive information such as SAHEB, which stores users' private chat data in a Firebase database in the Cloud. This study aims to implement the RC4+ 256-bit algorithm on SAHEB application user data to enhance data security. The RC4+ algorithm was chosen for its improved security and efficiency over the RC4 algorithm. Data was collected through observation and creation of 10 dummy chat data sets on the SAHEB web app, simulating user data. The implementation of the RC4+ algorithm was conducted using JavaScript. The study results show that the user chat data was successfully encrypted and decrypted, with an average encryption time of 0.30 ms and an average decryption time of 0.19 ms. Additionally, the Avalanche Effect produced was 3.009%, demonstrating the algorithm's effectiveness in maintaining data integrity.
PERANCANGAN APPLICATION PROGRAMMING INTERFACE PADA WEBSITE SAHEB MENGGUNAKAN ARSITEKTUR REST Sanjaya, Vic Bradley; Rahman, Syaiful; Surasa, Hendra
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.529

Abstract

Saheb is a web-based pet shop application built with Next.js and Firebase, offering pet product sales and online veterinary consultation services. However, Saheb faces challenges in integrating with third-party applications and system efficiency due to its reliance on Firebase. This study aims to design a REST API using Express.js to enhance modularity, integration, and application performance. The research methodology includes literature review, REST API design using layered architecture principles, and JWT authentication implementation. Evaluation shows that the REST API implementation reduced Firebase resource usage by 57.66% and significantly improved website performance, with average reductions in Speed Index, TBT, and LCP times. The integration of the REST API with third-party applications successfully facilitates interaction without direct Firebase connections. The study concludes that the implementation of REST API improves the efficiency, scalability, and performance of the Saheb application, and opens up opportunities for further development.
IMPLEMENTASI ALGORTIMA AES DAN BCRYPT UNTUK PENGAMANAN DATA PENGGUNA PADA WEBSITE JAHITKU Liauren, Richie Mulyo; Zaman, Baizul; Bahri, Syamsul
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.535

Abstract

User data security is a very important aspect in web-based information systems. This research aims to implement the AES and Bcrypt algorithms to protect user data stored in the MySQL database on the Jahitku website, a startup that has only been built in a relatively short time and does not yet have an adequate security system. The method used follows the flow of software development, starting with a literature study, analyzing system requirements, and designing system architecture. The data used for evaluation is qualitative data in the form of user data generated from 30 dummy data. In this implementation, AES 256 CBC and Bcrypt algorithms are applied to encrypt and hash user data. The evaluation results show that AES can perform encryption with an average time of 0.378 ms and decryption of 0.260 ms, and has a good level of randomness compared to other symmetric algorithms such as DES and Blowfish, with an Avalanche Effect of 50.27%. Meanwhile, Bcrypt requires an average hashing time of 369.045 ms and verify time of 145.569 ms. Although Bcrypt's Avalanche Effect only reaches 36.65%, Bcrypt can still produce unique hashes for the same input and shows good resistance to Brute Force Attacks compared to other hashing algorithms such as MD5, SHA1, and SHA256. This implementation succeeded in increasing the security of user data on the Jahitku website, making a positive contribution to startup development, and increasing user confidence in the services provided.
RE-DESIGN UI/UX WEBSITE JAHITKU MENGGUNAKAN METODE DESIGN THINKING phoa, raygina; Thayf, Mohammad Sofyan S.; Pontoh, Zaenab
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.538

Abstract

The fashion and garment industry is growing rapidly, making individuals' needs for appropriate clothing continue to increase. Jahitku is a web-based platform created so that tailors can reach more customers, provide good service, and customers get information according to their needs at affordable prices and high quality. However, Jahitku has problems in optimizing the relevant website, inconsistent layout, button navigation that doesn't work, and using colors that lack contrast. The aim of this research is to redesign the Jahitku website to achieve better user satisfaction. In this research, by applying the Design Thinking method, existing functions are analyzed and their usefulness is tested on the System Usability Scale (SUS). Making a prototype using the Design Thinking method produced significant recommendations through SUS testing, resulting in a final test score of 78.775. This score has increased compared to the previous score of 48.125 which was still in the low category. This improvement shows a significant improvement in user experience from “Poor” to “Good”. Thus, it can be concluded that by updating the appearance of the Jahitku website, the user experience can be improved and the Jahitku website can become more effective and attractive to users.
DESAIN PENGEMBANGAN MODUL UNTUK PENJAHIT PADA APLIKASI JAHITKU MENGGUNAKAN USER CENTERED DESIGN Phoandy, Frederica; Angriani, Husni; Pontoh, Zaenab
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.543

Abstract

Penelitian ini bertujuan untuk merancang User Interface (UI) pada website jahitkumenggunakan metode User Centered Design (UCD) yang dapat memudahkan penjahit dalammelakukan proses pendaftaran diri dan mengelola pesanan secara mandiri dengan desainyang user-friendly, intuitif dan sesuai dengan preferensi penjahit. Adanya keterbatasan fiturpada website jahitku dimana penjahit masih memerlukan admin untuk proses pendaftaransehingga menghanmbat efisiensi dan pertisipasi penajhit terkhusus penajhit kecil atauindividu. Penerapan metode User Centered Design (UCD) digunakan sebagai landasan untukmemberikan kemudahan bagi pengguna. User Centered Design (UCD) merupakan metodeyang berfokus pada kebutuhan pengguna yang dilakukan dengan cara membangun ataumerancang sistem yang melibatkan langsung pengguna dalam proses perancangannya. Hasilpengujian dari metode UCD memberikan kemudahan bagi pengguna dalam melakukanpendaftaran secara mandiri, menginput desain, membalas ulasan, membuat pesanan, danmelihat riwayat pesanan. Penerapan metode UCD mampu mengatasi masalah kesulitan yangdialami oleh penjahit pada website jahitku, serta menambah fitur untuk penjahit agar penjahitjuga dapat mudah menggunakan website.
ANALISIS USABILITY PADA WEBSITE SERVIO MENGGUNAKAN METODE THINK ALOUD Triono, Andri Maruli Imanuel; Musdar, Izmy Alwiah; Surasa, Hendra
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.541

Abstract

Service Electronica Online (SERVIO) is a web-based application project developed to provide online repair services for electronic goods. SERVIO can be accessed online through the website (https://serviceonline.bopolewali.com). The usability of the SERVIO website requires a usability analysis with the aim of ensuring that the website is accepted and used by users, as well as identifying the shortcomings of the SERVIO website. Usability testing on the SERVIO website will be conducted using the Think Aloud method. Based on the results of the usability test of the SERVIO website, respondents believe that the flow of the website is still not understandable. After the errors found in the website display were identified, recommendations were provided in the form of design improvements. The changes in design can be found in the login menu, navigation, service messages, and service progress.
PERANCANGAN PROTOTYPE HAND GLOVE BERBASIS ARDUINO SEBAGAI ALAT BANTU IDENTIFIKASI OBJEK BAGI PENYANDANG TUNANETRA Sun, Enrique Justine; Fajar, Mohammad; Munir, Abdul
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.566

Abstract

Blind individuals face obstacles in identifying objects or things around them, so a tool is needed that can help overcome these obstacles. This study aims to design an Arduino-based Hand Glove prototype that can help blind people identify objects around them. Research data collection was carried out through literature studies and testing of the designed prototype. The system is designed to consist of two large parts, the first part is the hand glove used by blind individuals, consisting of Arduino, RFID reader and speaker. The second part consists of objects to be identified that have been given an identity label in the form of a RIFD Tag. The evaluation results show that the design prototype can read and identify objects such as chairs, tables, laptops, cellphones and PCs which are distinguished from the sound variations that have been set and defined using a buzzer as a notification tool.

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