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Perancangan Sistem Presensi Satpam Berbasis GPS Terintegrasi pada Rumah Sakit Petrokimia Gresik Guswanrinandi, Danang Haedar; Bhakti, Henny Dwi
Jurnal Nasional Komputasi dan Teknologi Informasi (JNKTI) Vol 8, No 6 (2025): Desember 2025
Publisher : Program Studi Teknik Komputer, Fakultas Teknik. Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jnkti.v8i6.9978

Abstract

Abstrak - Sistem presensi satpam di Rumah Sakit Petrokimia Gresik masih menghadapi berbagai kendala, seperti keterlambatan input data kehadiran, kurangnya integrasi antara presensi, penjadwalan, dan perizinan, serta validasi lokasi yang belum akurat. Kondisi tersebut menyebabkan ketidaksesuaian jadwal antarshift, keterlambatan dalam proses persetujuan izin, dan menurunkan efektivitas pengawasan terhadap personel keamanan di lapangan. Penelitian ini bertujuan untuk mengembangkan sistem presensi satpam berbasis GPS yang terintegrasi dengan fitur penjadwalan dan perizinan digital guna meningkatkan efisiensi, akurasi, dan transparansi dalam administrasi kehadiran. Metode pengembangan yang digunakan adalah Waterfall, yang meliputi tahapan analisis kebutuhan, perancangan sistem, implementasi, serta pengujian menggunakan metode Black Box Testing untuk memastikan kesesuaian fungsi sistem dengan kebutuhan pengguna. Aplikasi ini dikembangkan dengan teknologi React.js pada sisi frontend, Node.js dengan Express.js pada sisi backend, serta Microsoft SQL Server sebagai basis data utama. Hasil implementasi menunjukkan bahwa sistem mampu memverifikasi kehadiran berdasarkan koordinat GPS secara akurat, mengelola jadwal kerja dan perizinan secara daring, serta mendukung peningkatan efektivitas dan akuntabilitas pengelolaan personel keamanan di lingkungan Rumah Sakit Petrokimia Gresik.Kata kunci : Sistem presensi; GPS; algoritma Haversine; penjadwalan perizinan; Waterfall; Abstract - The security attendance system at Petrokimia Gresik Hospital still faces several challenges, such as delays in attendance data input, lack of integration between attendance, scheduling, and leave management, as well as inaccurate location validation. These issues lead to schedule mismatches between shifts, delays in leave approval, and reduced effectiveness in monitoring security personnel on duty. This study aims to develop a GPS-based security attendance system integrated with digital scheduling and leave features to improve efficiency, accuracy, and transparency in attendance administration. The development process adopts the Waterfall method, which includes stages of requirement analysis, system design, implementation, and testing using the Black Box Testing method to ensure the system’s functionality meets user requirements. The application is built using React.js for the frontend, Node.js with Express.js for the backend, and Microsoft SQL Server as the main database. The implementation results show that the system can accurately verify attendance based on GPS coordinates, manage work schedules and leave requests online, and enhance the effectiveness and accountability of security personnel management at Petrokimia Gresik Hospital.Keywords: Attendance system; GPS; Haversine algorithm; scheduling; leave management; Waterfall;
Design and Implementation of Blockchain in a Website-Based Electronic Medical Record System Using the Prototype Model Chotijah, Umi; Rosyid, Harunur; Sutaji, Deni; Guswanrinandi, Danang Haedar; Nabil , M. Rizaldi Zidan; Akbar , Muhammad Asad Muhibbin
Indonesian Journal of Information Systems Vol. 8 No. 2 (2026): February 2026
Publisher : Program Studi Sistem Informasi Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/ijis.v8i2.13498

Abstract

The security and integrity of medical record data is a crucial issue in the era of healthcare service digitalization. Traditional systems still face risks of manipulation, information leaks, and issues with interoperability between healthcare institutions. Blockchain technology has emerged as a promising solution to address this issue thanks to its features of decentralization, openness, and difficulty in modification. One consensus method that can be applied is Proof of Work (PoW), which has proven to maintain the authenticity of transactions on a distributed network. This research aims to design and evaluate a blockchain-based medical record application using the PoW consensus algorithm to ensure the security, transparency, and reliability of medical data storage. The approach used is experimental, involving the development of a blockchain-based application prototype. The PoW algorithm is applied to ensure the validity of medical record data transactions. The evaluation was conducted by measuring the security aspect (resistance to data changes), performance (time to verify transactions), and scalability (number of transactions that can be handled). The results of the experiment show that implementing PoW in a medical record system can maintain data integrity with a high level of resistance to unauthorized changes. The average time for transaction verification is 2.4 seconds per block, with the ability to handle up to 150 transactions per minute. Although the performance of PoW requires significant computational resources, the level of security it offers suggests potential for implementation in larger healthcare systems. The application of blockchain with the PoW algorithm to medical records has proven to improve the security and transparency of medical information. This research successfully met the established objectives, although computational efficiency issues still need to be addressed. Further research is suggested to explore other consensus algorithms such as Proof of Stake (PoS) or Practical Byzantine Fault Tolerance (PBFT) to improve performance without sacrificing security aspects. Keywords: Blockchain, Electronic Health Records (EHR), Proof of Work (PoW), Smart Contract, Healthcare Information System