A billion networked gadgets with sensors and communication devices make up the Internet of Things (IoT). Making IoT a smart terminal is a hot topic right now. By linking cloud services, gadgets can receive more precise information for daily use. It is difficult to verify and authorise billions of smart terminal devices using RESTful APIs, which access cloud services. Privacy and security issues arise from personal use of smart terminal devices. This article introduces a token-based authorization mechanism. The token provides a secure way for devices to access cloud resources. As a result of the high level of privacy, sensitive data are not easily disclosed by a third-party authentication centre. It also expires after a certain time or when the token count surpasses a certain threshold, reducing the chance of devices being compromised. In this article, we offer a framework for medical wearables. In the experimental research study, the advantages of this framework are explained. Keywords; Internet of things, Authentication System, WSN