What Are Smart Glasses and How Do They Work?

Smart glasses are wearable devices that incorporate technology into traditional eyeglass frames. Depending on the model, they can include cameras, speakers, microphones, wireless connectivity and other smart features. Some smart glasses also include displays, but not all smart glasses use AR or display digital information in your field of vision.

That distinction is important because smart glasses have evolved into several categories. While the terms can overlap, here’s a basic breakdown:

• Smart glasses. Smart glasses are equipped with built-in technology such as cameras, speakers, microphones, voice controls and smartphone connectivity. They can provide hands-free calls, music, photos, videos and other features without necessarily displaying digital content in front of your eyes.
• AI glasses. AI glasses use artificial intelligence to provide features such as voice assistance, image and object recognition, translation and answering questions about what you see. Some models can also capture photos and videos or use AI to interact with information around you.
• XR glasses. XR, or extended reality, glasses are designed to deliver more engaging visuals. They can use built-in displays to create large virtual screens, spatial interfaces and augmented or mixed reality experiences. Depending on the model, XR glasses can connect to smartphones, computers, gaming devices or other hardware.
• Audio glasses. Audio glasses are designed to provide audio and microphone capabilities without a built-in camera. They can support hands-free listening and calls while maintaining a more traditional eyewear design.

Some of these combine smart features and AI capabilities with displays or AR technology. That means the best way to compare glasses is to look at the specific features. 

Smart glasses generally focus on adding connected features to eyewear. AI glasses put artificial intelligence first, allowing you to interact with an AI assistant and access information hands-free. XR glasses focus more heavily on displays and compelling digital content.

For example, AI glasses can use a camera and AI to answer questions about something you’re looking at, while XR glasses can place a large virtual display in front of you for watching movies, playing games or using a computer. Smart glasses may combine some of these features or focus on more straightforward functions such as audio, calls and photography.See Disclosure ¹

Smart glasses operate by integrating several advanced technologies into a compact eyewear form. Some smart glasses with display technology use small projectors to present digital information within your line of sight. These displays can be either transparent or reflective, allowing you to see both the real world and digital content simultaneously.

Similar to how VR headsets work, the best smart glasses utilize accelerometers, gyroscopes, magnetometers and other sensors to track your head movements, providing precise and responsive AR experiences. These sensors also enable the display to adjust accordingly and maintain the correct orientation of the AR content. This allows you to interact naturally with the augmented elements, whether you’re navigating through a city, accessing notifications or performing tasks with voice-activated instructions.

Like all modern devices, smart glasses run on internal batteries. Fully charged glasses can last up to eight hours during moderate usage. And when the battery is getting low, most models can conveniently be charged in a charging case. This not only powers up your smart glasses, but it also protects them when they’re not in use.

Since smart glasses and smart sunglasses are a fairly new concept, there are often many questions surrounding them. Here are some frequently asked questions to help you understand these innovative devices better:

What is the point of smart glasses?

Smart glasses aim to make your life easier. When it comes to smart eyewear, glasses with technology have blended convenience and functionality. Advanced features, like AR overlays with real-time information and navigation assistance, voice-controlled interaction and gesture recognition and health tracking capabilities, make smart glasses incredibly versatile and useful.

What problems do smart glasses solve?

A variety of problems can be solved by wearing smart glasses. Hands-free access to information increases productivity, allowing professionals to receive notifications, view data and communicate without interrupting their workflow. For fitness and health, smart glasses can track physical activity and vital signs, helping you stay informed about your health without an additional fitness tracker.

In fields like manufacturing and healthcare, smart glasses and AR overlays can assist with complex tasks, training and remote support, which improves efficiency and reduces errors. And, recent advancements take visual information and articulate it into speech, helping make new smart glasses beneficial for the visually impaired.See Disclosure ²

Do smart glasses need Wi-Fi?

Smart glasses don’t necessarily require Wi-Fi to operate because many of their basic functions can be performed without an internet connection. However, Wi-Fi connectivity significantly enhances their abilities by enabling real-time data and notifications, cloud integration, software updates, streaming and advanced AR applications.

Do smart glasses correct vision?

Some smart glasses can accommodate prescription lenses, but compatibility varies by model. You may need to order prescription lenses through the manufacturer or have them fitted separately. Check the product specifications before purchasing if you need vision correction.

The growing selection of smart, AI, XR and audio glasses means there are more ways than ever to choose wearable technology that fits your needs. If you’re looking for hands-free audio, photography and voice controls, smart glasses may be the right fit. If you’re most interested in AI assistance, look for AI glasses. If you want virtual screens, gaming or more immersive visual content, XR glasses may be worth considering. And if you are seeking hands-free audio and calls without a camera, audio glasses might be the right fit for you.

No matter which type you choose, comparing the display, cameras, audio, connectivity, battery life and compatibility can help you find glasses with the features you want.