The word “ubiquitous” can be defined as “existing or being everywhere at the same time,” “constantly encountered,” and “widespread.” When applying this concept to technology, the term ubiquitous implies that technology is everywhere and we use it all the time. Ubiquitous computing (ubicomp) is a post-desktop model of human-computer interaction in which information processing has been thoroughly integrated into everyday objects and activities.Because of the pervasiveness of these technologies, we tend to use them without thinking about the tool. Instead, we focus on the task at hand, making the technology effectively invisible to the user.
Ubiquitous technology is often wireless, mobile, and networked, making its users more connected to the world around them and the people in it.
Ubiquitous computing is changing our daily activities in a variety of ways. When it comes to using today’s digital tools users tend to
• communicate in different ways
• be more active
• conceive and use geographical and temporal spaces differently
• have more control
In addition, ubiquitous computing is
• global and local
• social and personal
• public and private
• invisible and visible
• an aspect of both knowledge creation and information dissemination

UbiComp is computing era that converges several computing domains and technologies to provide the goals of pushing the computing to the background, functioning calmly to perform the mundane task more intelligently. It involves expertise from the following technologies:
1. Embedded Computing
2. Mobile Computing
3. Wireless Technologies
4. Human Computer Interface
5. Sensor Networks
6. Web Technologiess
7. Secure Computing
8. Grid Computing


Ubiquitous computing refers to the use of computer in day-to-day life called pervasive computing.


Ubiquitous Healthcare is the delivery of health related services and information via  ubiquitous computing       technologies.


                Various applications  of ubiquitous computing

Based on existing knowledge and observations  we have the following definition of ubiquitous computing, especially as it applies to teaching and learning:

  • We can define ubiquitous computing environments as learning environments in which all students have access to a variety of digital devices and services, including computers connected to the Internet and mobile computing devices, whenever and wherever they need them. Ubiquitous computing, then, is more focused on many-to-many than one-to-one or one-to-many, and includes the idea of technology being always available but not itself the focus of learning.
  • Moreover, our definition of ubiquitous computing includes the idea that both teachers and students are active participants in the learning process, who critically analyze information, create new knowledge in a variety of ways (both collaboratively and individually), communicate what they have learned , and choose which tools are appropriate for a particular task.

An example might be a home environment that adjusts as you enter a room. The lighting and temperature might adjust to your comfort level or a coffee maker may start to brew a cup of coffee just the way you like it in the morning. In a city environment in a heat wave the city electric grid may adjust power levels going into homes and businesses to avoid a power outage or to adjust power costs up to lower demand.


In tomorrow’s home, objects will communicate with one another. The refrigerator will talk with the notebook, the chair with the stereo, the sweater with the cleaning robot, and so on.

Apple’s iPhone is a great example of the beginning stages of ubiquitous computing. The user interface is much more  compared to other smart phones previously introduced and currently in the market. It has been a huge success and shows that people want technology that is simpler to use.


As broadband capability improves, so will the possibilities of this networked home. It would be possible to monitor your home from work, on the bus, or at the store.

Ubiquitous systems will involve many varieties of cooperation between hardware and software. But each system, whether for medical care or home management or traffic control, will not stand alone.

Ubiquitous will enable people to focus on their tasks and on interacting with other people.

Ubiquitous computing enables businesses to redefine the key aspects of their customer relationships.

Ubiquitous computing enables innovative forms of social action, novel organizational forms, and new business models.

Ubiquitous computing will bring about cheaper, faster, more pervasive technologies into our everyday lives integrating services with the devices that power them.