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Abstrak :
PT Bank Negara Indonesia (Persero) Tbk (BNI) merupakan salah satu perusahaan perbankan di Indonesia yang melayani nasabahnya dengan baik. Meskipun demikian, BNI berupaya untuk selalu meningkatkan layanan terhadap nasabahnya dengan menciptakan aplikasi BNI Call. Akan tetapi, BNI Call yang diciptakan belum berhasil untuk mencapai target pengguna yang diinginkan BNI. Berangkat dari permasalahan tersebut penelitian ini melakukan evaluasi menggunakan usability testing dan kuesioner System Usability Scale (SUS) terhadap aplikasi BNI Calls saat ini ke 20 partisipan penelitian. Hasilnya membuktikan bahwa kondisi aplikasi BNI Call saat ini membutuhkan perbaikan karena memperoleh nilai SUS 31,25 dengan predikat poor. Selanjutnya, dilakukan perancangan rekomendasi desain interaksi alternatif menggunakan metode User Centered Design (UCD) dari hasil evaluasi yang sebelumnya dilakukan. Setelah rancangan tercipta, dilakukan proses evaluasi kembali terhadap rancangan yang membuktikan bahwa rancangan desain interaksi alternatif memiliki usability yang baik karena memperoleh nilai SUS sebesar 78,75 dengan predikat good. ......PT Bank Negara Indonesia (Persero) Tbk (BNI) is one of the banking companies in Indonesia that serves its customers well. Nevertheless, BNI strives to always improve services to its customers by creating the BNI Call application. However, the BNI Call that was created has not succeeded in achieving the user target BNI wanted. Based on these problems, this study evaluates using usability testing and the System Usability Scale (SUS) questionnaire on the current BNI Calls application to 20 research participants. The results prove that the current condition of the BNI Call application requires improvement because it has a SUS score of 31.25 with a poor predicate. Next, an alternative interaction design recommendation was designed using the User Centered Design (UCD) method from the results of the previous evaluation. After the design was created, a re-evaluation process was carried out on the design which proved that the alternative interaction design design had good usability because it obtained an SUS score of 78.75 with a good predicate.

Abstrak :
A significant and convenient approach to detection and analysis of biological, environmental and agricultural items is the harnessing of features in widely available smartphones to create field-deployable scientific instruments, allowing measurements to be made onsite and in real-time. This book will cover a number of self-contained smartphone instruments with the particular focus on spectroscopic-based measurements. Measurement and analysis on precision of such low-cost instrumentations are provided to compare with more expensive commercial equipment. This book also discusses some limitations, possible recommendations and scopes for further instrumentations using smartphones and other smart devices. Particularly, the opportunity to integrate the devices into the global Internet-of-Things (IoT) platform will be discussed. Researchers and instrumentation designers in optical and photonic sensing, smart and IoT-based sensing, biological and environmental analysts, agricultural, and food quality researchers (and public health authorities) will find this book useful as reference. Students in science and engineering disciplines for teaching and educational purposes will also find this book useful as a secondary textbook.