Internet of Things (IoT) is still an interesting research topic in recent years because it can be applied to a system in many fields. Many ecosystems, energy and renewable energy companies should be able to adapt this technology into their systems to simplify monitoring processes. There are three general issues associated with IoT applications; security, interoperability and innovations. As IoT technology is implemented in a system, a security issue of the system will be becoming a new problem. This paper will discuss designing a parallel quantum random number generator (p-QRNG) where it's generated high-speed random bits have a potential to be used in One-Time Pad (OTP) encryption system for IoT ecosystem applications. Parallel QRNG design is proposed to speed up data rate of a single QRNG's output in order to fulfill requirements of OTP encryption system. © 2019 International Center for Scientific Research and Studies.