Research in halal logistics and halal supply chain: Issue and area development

Today the study of halal logistics and halal supply chain is growing and provides a great opportunity to do research both empirical and theoretical development. However, until now research in the field of logistic and supply chain is still limited. Therefore, this paper aims to explore opportunities and areas of development in this field by conducting literature review of previous research. Research opportunities in halal logistics and halal supply chain has been reviewed by many researchers and grouped into many categories, namely (1) Principles, Conceptual Model and Framework, (2) Innovation, Development and Challenges, (3) Critical Control Point, Critical Success Factors and Halal Control Activities, (4) Consumers Willingness to Pay, (5) Transportation and Information Technology, (6) Strategic approach. The issue in each category and research opportunities will be discussed in this paper.


Introduction
The development of the field of halal logistics and halal supply chain on all aspect of the halal business have provided great opportunities to do research. But as far as the author's knowledge, the paper discusses problems and research opportunities in the field of halal logistics and halal supply chain does not exist yet. While Jaafar et al. [5] only wrote the number of halal logistics and halal supply chain publications in the range of year 2004-2013. Therefore, this paper is expected to provide additional insight for researchers. Research opportunities in halal logistics and halal supply chain has been reviewed by many researchers. Principal component bodies (PCB) and the issues that related to halal logistics and halal supply chain consist of 6 issues. For detail of classification of each paper is showed on the Table 1

Innovation, Development and Challenges
The needs to be innovative in initiating more logistics services that are based on halal concept are crucial in meeting the needs of the increasing demand by the customers especially the Muslims [20].

Consumer Willingness to Pay (WTP)
Understanding consumer willingness to pay can lead manufacturers to implement the concept of halal in its value chain [27]. Some issues are widely discussed in Consumer Willingness to Pay include: Consumer Behavior and People's Concerns Regarding Halal. Some research opportunities in this area includes: Identifying a more appropriate method of measuring the long term effects of consumer behavior; Apply the research model to other countries.

Transportation and Information Technology
The Halaltracer tracking system was developed using the combinations of Global Positioning System (GPS) and geofence algorithm. The Halaltracer tracking system is significantly contributing in terms of automatic detection on the spatial activity taken during the halal product's shipment process [31]. Some issue that appear in the halal logistics and halal supply chain related to transportation and information technology such as: Adaption of Halal Supply Chain, Sensor and Improvement. Some research opportunities in this category such as: Finding what factors could be a driver for halal manufacturers; Research with better contextual adoption theory; Barcode sensor, QR code or RFID can be integrated in the system; Mobile version for tablet either in Android or IOS version.

Strategic Approach
Good governance requires the examination of external factors such as industry regulation, market forces and competition and internal factors such as business strategy and goals and corporate culture [33]. Some issues are widely discussed in Strategic Approach such as Halal Certification, SWOT analysis and Sample Size. Some research opportunities in this area are Develop a framework of halal certification; Find the barriers and critical success factors; SWOT analysis on other halal market (pharmaceutical and healthcare, tourism, and food products), Research with a larger sample size. Various categories of issues and research opportunities are given in Table 2. Financial aspectof halalan toyyiban supply chain [6], Further research could be embarked in these areas [22], Quantify the CSFs for a more exact outcome by clarifying which CSFs are applicable [25], Assist the smaller organizations towards the realization of halal supply chain [26].

Consumers Willingness to Pay
Consumer behavior; People's concerns regarding halal.
Identifying a more appropriate method of measuring the long term effects of consumer behavior [27], Apply the research model to other countries [28].

Conclusion
Today, the increasing competitiveness in industry force many company to increase capability in all aspect along their business. One of the challenges is to provide halal product and services that create opportunity for researcher to explore this filed. From study literature , it can be conclude that research in halal logistic and halal supply chain can be classified into 6 categories, namely Principles, Conceptual Model and Framework, Innovation, Development and Challenges, Critical Control Point, Critical Success Factors and Halal Control Activities, Consumers Willingness to Pay, Transportation and Information Technology, Strategic approach. The development of each categories still in early phase, therefore it provide great opportunity to study halal logistic and halal supply chain by considering the maturity of traditional logistic and supply chain.