Archinect's Lexicon focuses on newly invented (or adopted) vocabulary within the architectural community. For this installment, we're featuring a term central to how technology and artificial intelligence may be seamlessly incorporated into future buildings and cities.

"Ubiquitous computing," also known as pervasive computing, is a concept in computer science and engineering where computing is made to appear anytime and everywhere. In this type of computing, technology becomes virtually invisible in our lives. Instead of a dedicated device such as a desktop computer, ubiquitous computing can occur using any device, in any location, and in any format. A user interacts with the computer, which can exist in many different forms including laptop computers, tablets, and terminals in everyday objects such as a refrigerator or a pair of glasses.

The goal of ubiquitous computing is to create ambient intelligence where network devices embedded in the environment provide unobtrusive connectivity and services all the time, thus improving human experience and quality of life without explicit awareness of the devices and systems involved.

In an architectural context, the integration of ubiquitous computing within architecture turns buildings into interactive, adaptive environments that respond intelligently to human presence and behavior, providing improved comfort, safety, and efficiency. This leads to the development of what's often called "smart buildings" or "smart cities".

Examples of the profound implication of ubiquitous computing in architecture include:

1. Intelligent Building Systems: With embedded sensors and actuators, buildings can adapt their settings according to the needs of the inhabitants or energy efficiency. For example, temperature can be automatically adjusted based on occupancy, and lights can be dimmed or brightened depending on the amount of natural daylight.
2. Improved Accessibility: With ubiquitous computing, buildings can become more accessible. For example, doors can automatically open for people carrying groceries, or elevators can be called from a smartphone.
3. Safety and Security: Ubiquitous computing can enhance building safety and security. Security systems can be more intelligent and proactive. For example, they could detect unusual activity and alert security personnel or building inhabitants.
4. Maintenance: Sensors embedded within the building's infrastructure can detect potential problems (like leaks or electrical issues) before they become significant, allowing for preventative maintenance.

Ubiquitous computing, while beneficial in numerous ways, also brings about potential concerns particularly related to privacy, security, and dependency. 

The extensive network of sensors and devices collecting data can pose a serious threat to privacy if misused or if the data falls into the wrong hands. An abundance of personal information is recorded and processed, from habits and routines to preferences, potentially enabling a level of surveillance and personal intrusion that's currently unparalleled. Moreover, the pervasive interconnectivity can make buildings and cities vulnerable to cyber-attacks, disrupting crucial systems and infrastructure.