AI devices must be close to human senses to be effective. Glasses are the most natural form factor as they capture sight, sound, and are close to the mouth for speech. This sensory proximity gives them an advantage over other wearables like earbuds or pins.

OpenAI's upcoming hardware family, including a smart speaker and glasses, will intentionally have no screens. This is a deliberate strategic choice to move beyond the screen-centric ecosystem dominated by Apple and Google. It represents a bet on a future where AI interaction is primarily ambient, powered by voice and computer vision rather than touchscreens.

Joanna Stern argues against the imminent death of the smartphone. She predicts it will remain the core device due to its mature battery, connectivity, and sensor technology. Future wearables, like smart glasses or audio recorders, will function as peripherals that connect to the phone as a central hub.

Demis Hassabis suggests that previous attempts at smart glasses like Google Glass were too early because they lacked a compelling use case. He believes a hands-free, always-on AI assistant like Project Astra provides the 'killer app' that will finally make smart glasses a mainstream consumer device.

Microsoft AI's CEO predicts the smartphone will be unbundled, with its functions moving to smaller, specialized devices like earbuds and badges. The phone's primary remaining role will be identity verification. AI will become ambient and accessible through various sensors, rather than anchored to a single device.

Evan Spiegel predicts AR glasses won't immediately replace smartphones. Instead, their first major use case will be displacing large screens. He argues that having a huge, private, portable screen for work or entertainment is a more compelling initial value proposition than full smartphone replacement.

While phones are single-app devices, augmented reality glasses can replicate a multi-monitor desktop experience on the go. This "infinite workstation" for multitasking is a powerful, under-discussed utility that could be a primary driver for AR adoption.

While voice interfaces will grow, the next truly seismic platform shift will be the adoption of AR glasses. This change will be as profound as the transition from television to the smartphone, fundamentally altering how we consume content and interact with the digital world.

Current devices like smartphones are 'pre-AI' hardware not optimized for modern AI interaction. The next major technological wave will be devices built from the ground up to be perceptual, conversational, and empathetic. This creates a massive opportunity for founders to build the successor to the phone.