The prototype is essential for a design team. The group might include interaction designers, a programmer, and a project manager. Different people have different expectations of the prototype, leading to misunderstanding and false expectations. In this circumstance, the prototype should emphasize the overall structure. Demonstrating how the prototype "looks and feels," the "role" it plays to solve the user's problem, and how this system works will be the critical guideline to build the final product. Based on the different types of the prototype, the designer also needs to decide on the resolution(amount of detail) and fidelity (closeness to the eventual design).

This type of prototype is called "look and feel," which directly helps both the user and team members understand how the final product will look and interact with it. Although it might not solve the user's problem instantly and demonstrate the functions accurately, a quick visualization and various possible feelings can provide the design team's probable direction. The advantages of this prototype also include that it starts with a simple user interface design, which developed without implementing complex and expensive technology.

Implementation prototypes are more advanced than the "look and feel" prototype because it requires demonstrating the actual function and what technology can achieve it. These implementation prototypes help the design team evaluate the technical feasibility and get feedback from users on performance issues. If the current technology cannot implement this function, the design team must figure out another solution. After this prototype, the design team will build an integration prototype that will complete the user experience.

Unlike traditional graphic design, the digital designer can test their work much faster by using the programming language during the prototyping phase. The dynamic systems also allow the designer to revise the base of their design on their needs. Burnham believes that the design process should not be ended when the product is created. Fortunately, if the designer creates their artwork in a programming language, they will always have the chance to recreate and reuser it for a different purpose.

The designer needs to recognize that when they design a product, they need to be convinced that it would be a part of a more significant project in the future. At the beginning of the design process, the designer should provide a common identity and consistent look for the design system. The system is both flexible and straightforward, and it has room for an infinite number of designs in the future.
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Ex: Google and APPLE design guide.

Since the Bauhaus school, artists and designers have utilized the Gestalt principles long to anticipate the effects of their work. Users of the design will naturally draw conclusions based on the entirety, so the designer must formalize the content into a coherent layout and control it. The geometric composition has excellent advantages. It entails dividing the canvas into smaller parts and using these divisions to arrange the visual elements. For example, it can use the random() function to randomize the margin every time the code runs.

Based on the reading, people enjoy using the same internet that carries and shares our society's communications, like news media, entertainment, and financial traffic. The internet connection price is low and vulnerable. Unfortunately, this is the consequence of commercial decisions and the problem of business models. If people use expensive networked devices, they will be more secure and defeat the attacker's apparent exploits. However, in the low end of the market, and the network connection can not gain much of the profit, the cost of securing privacy will be intolerable.

Many networked devices are unprotected in public and can be accessed by a digital intruder through the local network and every other device connected. However, significant cooperation will protect personal devices better, like cell phones and smart home devices. Most people are too inclined to the device's connection with the internet to manage their details of life. When using them, the service provider will get the user's data on the time and place of what users need and its frequency and intensity. This data has value and can be used to giant the profit, which derives the network security problem. Just like what Baidu's Robin Li said, "people are willing to give up data privacy for convenience."

The data is an excellent resource for urban planning if people use it correctly and appropriately. For example, it can be used in allocated conflicts and balancing the city's competing constituencies' needs. However, the authorship of using algorithms to guide the distribution of civic resources is itself an inherently political act. Although people expect the systems analysis to be "objective" scientism, it will be determined by the leadership's actual needs. It is essential to be aware of the autonomous system's claims to regulate and control civic resources. The internet of things is a complex domain of possibility, and it is wise to keep investigating it energetically.

Today's technology aims to reduce the customer's thinking process and fulfill their needs as much as possible. Once they give instructions, they expect to respond immediately because today's attention span is getting shorter. If any products take a long time to figure out, they will be abandoned right away. It is also essential to make interaction straightforward for the user to understand in the interaction design field. That is why today, the user experience becomes an indispensable part of creating a service or product.