Smart glasses or smart glasses are computer glasses that can be used that add information next to or what the user sees. Alternatively, smart lenses are sometimes defined as portable lenses that can change their optical properties at runtime. Smart sunglasses that are programmed to change the dye by electronic means are an example of this latest type of smart lens. The overlap of information in a field of view is achieved through a head-mounted optical display (OHMD) or built-in wireless heads-up (HUD) or augmented reality (AR) display that has the ability to reflect projected digital images such as allowing the user to see through it, or see better with it. While earlier models can perform basic tasks such as serving as a front screen for a remote system, such as smart glasses using cellular or Wi-Fi technology, modern smart glasses are actually portable computers that can run mobile independent applications. Some are free hands that can communicate with the Internet through natural language voice commands, while others use the touch buttons.
Like other computers, smart lenses can collect information from internal or external sensors. You can control or retrieve data from other instruments or computers. It can support wireless technologies such as Bluetooth, Wi-Fi and GPS. While a smaller number of models run a mobile operating system and function as portable media players to send audio and video files to the user through a Bluetooth headset or WiFi. Some models of smart lenses also have full capacity for tracking of life and activity. Such smart lens devices may also have all the features of a smartphone. Some also have activity tracker functionality functions (also known as "fitness tracker") as seen on some GPS watches.